Edoziri Nsogbu na Fizik Isi

1. Ahụ́ nke dị kilogram 1 na-ada n'enweghị nsogbu site n'izu ike, site n'ịdị elu nke mita 80. Ọsọ ọsọ nke ike ndọda bụ 10 m/s ^2. Kedu ike nke ike mgbe ahụ dara n'ala?

A maara:

Ibu (m) = 1 kg

Ogologo (h) = mita 80

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọrọ: ike mmegharị ahụ mgbe ahụ dara n'ala

Ngwọta:

Ike mekanikal mbụ (ME _o ) = ike ike ndọda (PE)

M E _o = P E = mgh = (1)(10)(80) = 800 Joules

Ike mekanikal ikpeazụ (M E _t ) = ike kinetic (K E )

Ụkpụrụ nke nchekwa ike igwe :

M E _o = M E _t

P E = K E

800 = K E

Ike kinetic ikpeazụ bụ 800 joules.

[irp]

2. Ahụ́ nke dị kilogram anọ na-ada site n'izu ike, site n'ịdị elu nke mita iri. Ọsọ ọsọ nke ike ndọda bụ 10 ms ^–2 . Kedu ike kinetic na ọsọ dị mita ise n'elu ala?

A maara:

Mgbanwe n'ịdị elu (h) = 10 – 5 = 5 mita s

Ibu (m) = 4 kg

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọrọ: Ike kinetic na mita 5 n'elu ala na ọsọ na mita 5 n'elu ala

Ngwọta:

(a) Ike kinetic dị mita ise n'elu ala

Ike mekanikal mbụ (M E _o ) = ike ike ndọda (P E )

M E _o = P E = mgh = (4)(10)(5) = 200 Joules

Ike mekanikal ikpeazụ (EM _t ) = ike kinetic (EK)

M E _t = K E

Ụkpụrụ nchekwa ike igwe na-ekwu na ike igwe mbụ = ike igwe ikpeazụ.

M E _o = M E _t

200 = K E

Ike kinetic dị mita ise n'elu ala bụ 200 Joules.

(b) ọsọ dị mita 5 n'elu ala

Ike mekanikal mbụ (M E _o ) = ike mekanikal ikpeazụ (M E _t )

P E = K E

200 = ½ mv ²

2(200) / 4 = v ²

100 = v ²

v = √100

v = 10 m/s

Ọsọ ahụ na mita ise n'elu ala bụ 10 m/s.

[irp]

3. Mango na-ada n'enweghị nsogbu site n'izu ike, site n'ịdị elu nke mita 2. Ọsọ ọsọ nke ndọda sitere na ike ndọda bụ 10 ms ^–2 . Chọpụta ọsọ mango mgbe ọ dara n'ala.

A maara:

Ogologo (h) = mita 2 n'akụkụ

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọtara: ọsọ mango mgbe ọ dara n'ala.

Ngwọta:

Ike mekanikal mbụ (M E _o ) = ike ike ndọda (P E )

M E = P E = mgh = m (10)(2) = 20 m

Ike mekanikal ikpeazụ (M E _t ) = ike kinetic (K E )

M E _t = K E = ½ mv ²

Ụkpụrụ nke nchekwa ike igwe na-ekwu na ike igwe mbụ = ike igwe ikpeazụ.

M E _o = M E _t

20 m = ½ mv ²

20 = ½ v ²

2(20) = v ²

40 = v ²

v = √40 = √(4)(10) = 2√10 m/ s

[wpdm_package id='1166′]

1. Ọrụ nke ike na-arụ site na nsogbu na ngwọta
2. Nsogbu na ngwọta ike ọrụ-kinetic
3. Nsogbu na ngwọta nke ụkpụrụ ike ọrụ-mekaniki
4. Nsogbu na ngwọta ike nwere ike ike ndọda
5. Ike nwere ike nke nsogbu na ngwọta nke mmiri na-agbanwe agbanwe
6. Nsogbu na ngwọta ike
7. Ojiji nke nchekwa ike igwe maka mmegharị ọdịda n'efu
8. Ojiji nke nchekwa ike igwe maka mmegharị elu na ala na mmegharị ọdịda efu
9. Ojiji nke nchekwa ike igwe maka mmegharị n'elu gbagọrọ agbagọ
10. Ojiji nke nchekwa ike igwe maka mmegharị n'elu elu gbagọrọ agbagọ
11. Ojiji nke nchekwa ike igwe maka mmegharị ihe atụ

GỤKWUO

1. Mmadụ na-atụba nkume dị kilogram 1 n'elu na mita 2/s ka ọ na-eguzo n'ọnụ ọnụ ugwu ka nkume ahụ wee daa n'ala ugwu ahụ mita 40 n'okpuru ya. Kedu ike kinetic nke nkume ahụ n'elu mita 10 n'elu ala? Ọsọ ọsọ n'ihi ike ndọda g = 10 m/s ².

A maara:

Ibu (m) = 1 kg

Ọsọ mbụ (v _o ) = 2 m/s

Mgbanwe dị n'ịdị elu = 40 – 10 = mita 30

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọrọ: ike kinetic nke nkume na mita 10 n'elu ala

Ngwọta:

Ike igwe mbụ

Ike ike ndọda mbụ (EP) = mgh = (1)(10)(30) = 300 Joules

Ike kinetic mbụ (KE) = ½ mv _o ² = ½ (1)(2) ² = ½ (4) = 2 Joules

Ike mekanikal mbụ = ike ike ndọda mbụ + ike kinetic mbụ = 300 + 2 = 302 Joules.

Ike mekanikal ikpeazụ

Ike mekanikal ikpeazụ = ike kinetic ikpeazụ = ike ike ndọda mbụ + ike kinetic mbụ = 300 + 2 = 302 Joules.

[irp]

2. Mmadụ tụbara ihe dị kilogram 1 n'elu n'ikuku site na ọsọ mbụ nke m 10/s. Chọpụta (a) ike ike ndọda n'ogo kachasị elu (b) elu kachasị elu.

Ọsọ ọsọ nke ike ndọda bụ 10 m/s ²

A maara:

Ibu (m) = 1 kg

Ọsọ mbụ (v _o ) = 10 m/s

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọrọ : ike ike ndọda n'ogo kachasị elu na oke kachasị elu

Ngwọta:

(a) ike ike ndọda n'ogo kachasị elu

Ike mekanikal mbụ:

Ike mekanikal mbụ (ME) = ike kinetic mbụ (KE) = ½ mv _o ² = ½ (1)(10) ² = ½ (100) = 50 Joules.

Ike mekanikal ikpeazụ:

Ike mekanikal ikpeazụ (ME) = ike ike ndọda (PE)

Ụkpụrụ nke nchekwa ike igwe:

Ike mekanikal mbụ = ike mekanikal ikpeazụ

KE = PE

50 = PE

Ike ike ndọda bụ 50 joules.

(b) Ogologo kachasị elu

PE = mgh

50 = (1)(10) awa

50 = awa 10

h = 50 / 10 = mita 5

Ogologo kachasị elu bụ mita ise n'elu ala.

[wpdm_package id='1174′]

1. Ọrụ nke ike na-arụ site na nsogbu na ngwọta
2. Nsogbu na ngwọta ike ọrụ-kinetic
3. Nsogbu na ngwọta nke ụkpụrụ ike ọrụ-mekaniki
4. Nsogbu na ngwọta ike nwere ike ike ndọda
5. Ike nwere ike nke nsogbu na ngwọta nke mmiri na-agbanwe agbanwe
6. Nsogbu na ngwọta ike
7. Ojiji nke nchekwa ike igwe maka mmegharị ọdịda n'efu
8. Ojiji nke nchekwa ike igwe maka mmegharị elu na ala na mmegharị ọdịda efu
9. Ojiji nke nchekwa ike igwe maka mmegharị n'elu gbagọrọ agbagọ
10. Ojiji nke nchekwa ike igwe maka mmegharị n'elu elu gbagọrọ agbagọ
11. Ojiji nke nchekwa ike igwe maka mmegharị ihe atụ

GỤKWUO

1. A na-ejikọta ibu nke kilogram 2 na isi iyi. Ọ bụrụ na ogologo oge nke isi iyi ahụ bụ 4 cm, chọpụta ike nwere ike nke isi iyi na-agbanwe agbanwe . Ọsọ ọsọ nke ike ndọda bụ 10 m/s ².

A maara:

Ibu (m) = 2 kg

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Ibu (w) = mg = (2)(10) = 20 N

Ogologo (x) = 4 cm = 0.04 m

Achọsiri ike: Ike nwere ike nke mmiri na-agbanwe agbanwe

Ngwọta:

Usoro iwu Hooke :

F = kx

F = ike, k = ihe na-agbanweghi agbanwe nke oge opupu ihe ubi, x = mgbanwe n'ogologo oge opupu ihe ubi

Oge opupu ihe ubi na-agbanwe agbanwe:

k = w / x = 20 / 0.04 = 500 N/m

Ike nwere ike nke mmiri na-agbanwe agbanwe:

PE = ½ kx ² = ½ (500) (0.04) ² = (250) (0.0016) = 0.4 Joules

Ngwọta ọzọ:

PE = ½ kx ² = ½ (w / x) x ² = ½ wx = ½ mgx

w = ibu, m = oke, x = mgbanwe n'ogologo oge opupu ihe ubi

PE = ½ (2) (10) (0.04) = (10) (0.04) = 0.4 Joules.

[irp]

2. Ogologo oge nke mmiri site na ike F = 50 N bụ 10 cm. Kedu ike nke mmiri na-agbanwe agbanwe nwere ike inwe ma ọ bụrụ na ogologo oge nke mmiri ahụ bụ 12 cm?

A maara:

Ogologo (x) = 10 cm = 0.1 m

Ike (F) = 50 N

Achọsiri ike : Ike nwere ike nke mmiri na-agbanwe agbanwe

Ngwọta:

Oge opupu ihe ubi na-agbanwe agbanwe:

k = F / x = 50 / 0.1 = 500 N/m

Ike nke spring na-agbanwe agbanwe ma ọ bụrụ na ogologo oge opupu ihe ubi bụ 12 cm.:

PE = ½ kx ² = ½ (500) (0.12) ² = (250) (0.0144) = 3.6 Joules.

[irp]

3. Eserese nke F vs x egosiri na eserese dị n'okpuru. Kedu ike nwere ike nke spring elastic, ọ bụrụ na ogologo oge nke spring bụ 10 cm?

A maara:

Ike (F) = 5 N

Ogologo oge opupu ihe ubi (x) = 2 cm = 0.02 m

Achọ: Ike nke spring na-agbanwe agbanwe ma ọ bụrụ na spring na-agbatị 0.1 m.

Ngwọta:

Oge opupu ihe ubi na-agbanwe agbanwe:

k = F / x = 5 / 0.02 = 250 N/m

Ike nke spring na-agbanwe agbanwe ma ọ bụrụ na ogologo oge opupu ihe ubi bụ 0.1 m:

PE = ½ kx ² = ½ (250) (0.1) ² = (125) (0.01) = 1.25 Joules.

4. Onye egwuregwu na-awụlikwa elu n'elu ngwa egwu mmiri nke nwere ibu nke 500 N, oge opupu ihe ubi ahụ na - ebelata 4 cm. Chọpụta oke ike nwere ike ịmanye onye egwuregwu ahụ.

A. 20 Joule

B. 10 Joule

C. 5 Joule

D. 2 Joule

A maara:

Ike (F) = 500 N

Mgbanwe n'ogologo oge opupu ihe ubi (Δx) = 4 cm = 0.04 m

Achọsiri ike: Ike nwere ike nke oge opupu ihe ubi

Ngwọta:

Gbakọọ ihe na-agbanwe agbanwe nke mmiri site na iji usoro iwu Hooke:

k = F / Δx = 500 N / 0.04 m = 12500 N/m

Ike nke oge opupu ihe ubi:

PE = ½ k Δx ² = ½ (12500) (0.04) ² = (6250) (0.0016)

PE = 10 Joule

Azịza ya ziri ezi bụ B.

5. Mmiri mgbe a kwụnyere ya na ibu nke gram 500, ogologo ya na - abawanye site na 5 cm. Chọpụta ike ya na-adịgide adịgide na ike ya .

A maara:

Ibu ihe (m) = gram 500 = (500/1000) kg = 5/10 kg = 0.5 kg

Ọsọ ọsọ (g) = 10 m/s ²

Ibu ihe (w) = mg = (0.5 kg)(10 m/s ² ) = 5 kg m/s ² = 5 Newtons

Mgbanwe n'ogologo oge opupu ihe ubi (Δx) = 5 cm = 0.05 m

Achọrọ: ike oge opupu ihe ubi (k) na ike nwere ike (PE)

Ngwọta:

Nke mbụ, gbakọọ ihe na-agbanweghi agbanwe nke oge opupu ihe ubi site na iji usoro nke iwu Hooke:

k = w / Δx = 5 N / 0.05 m = 100 N/m

Ihe nwere ike ịgbanwe oge opupu ihe ubi:

PE = ½ k Δx ² = ½ (100) (0.05) ² = (50) (0.0025)

PE = 0.125 Joule

[wpdm_package id='1179′]

1. Ọrụ nke ike na-arụ site na nsogbu na ngwọta
2. Nsogbu na ngwọta ike ọrụ-kinetic
3. Nsogbu na ngwọta nke ụkpụrụ ike ọrụ-mekaniki
4. Nsogbu na ngwọta ike nwere ike ike ndọda
5. Ike nwere ike nke nsogbu na ngwọta nke mmiri na-agbanwe agbanwe
6. Nsogbu na ngwọta ike
7. Ojiji nke nchekwa ike igwe maka mmegharị ọdịda n'efu
8. Ojiji nke nchekwa ike igwe maka mmegharị elu na ala na mmegharị ọdịda efu
9. Ojiji nke nchekwa ike igwe maka mmegharị n'elu ihe gbagọrọ agbagọ
10. Ojiji nke nchekwa ike igwe maka mmegharị n'elu elu gbagọrọ agbagọ
11. Ojiji nke nchekwa ike igwe maka mmegharị ihe atụ

GỤKWUO

1. Ahụ́ nke dị kilogram 1 n'enweghị ihe ọ bụla ga-ada site n'izu ike, site n'ịdị elu nke mita 10.

Kpebie:

(a) Ọrụ e ji ike ndọda rụọ

(b) Mgbanwe nke ike ike ndọda

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

A maara:

Ibu (m) = 1 kg

Ogologo (h) = 10 m

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Ibu (w) = mg = (1 kg)(10 m/s ² ) = 10 N

Ngwọta:

(a) Ọrụ e ji ike ndọda rụọ

W = wh = mgh

W = (1)(10)(10) = Joule 100

(b) Mgbanwe nke ike ike ndọda

Mgbanwe nke ike ike ndọda hà nhata ọrụ nke ike ndọda rụrụ.

Δ EP = 100 Joule

[irp]

2. Ihe 10 N na-ada n'ala n'elu ebe dị larịị nke gbagọrọ agbagọ n'akụkụ mita abụọ. Chọpụta ọrụ e ji ike ibu rụọ!

A maara:

ibu (w) = 10 N

w _x = w mmehie θ = (10) (mmehie 30 ^o ) = (10) (0.5) = 5 N

d = 2 m

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

A chọrọ ya: ọrụ e ji ike ibu rụọ

Ngwọta:

W = F d = w _x d = (5)(2) = 10 Joules

Ngwọta ọzọ:

Sin 30 ^o = h / d

0.5 = awa / 2

h = (0.5)(2)

h = 1m

Ọrụ e ji ike ibu rụọ;

W = F d = wh = (10 N)(1 m) = 10 N m = 10 Joules

[irp]

3. Ihe dị gram 1,500 n'elu ala , daa n'ala n'efu. Kedu ike ndọda nke ihe ahụ. Ọsọ ọsọ nke ndọda bụ 10 m/s ².

A maara:

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Ibu (m) = gram 1500 = kilogram 1500/1000 = kilogram 1.5

Ogologo (h) = mita 20

Achọsiri ike: Ike ike ndọda

Ngwọta:

PE = mgh = (1.5 kg)(10 m/s ² )(20 m) = 300 kg m ² / s ² = 300 Joules

4. Dabere na eserese dị n'okpuru, ọ bụrụ na oke ihe 1 bụ kilogram 2 na oke ihe 2 bụ kilogram 4, ntụnyere ike nwere ike nke ihe 1 na ihe 2 bụ …..

A maara:

Ibu nke ihe 1 (m₁) = 2 kilogram

Ibu ihe 2 (m2 ₎ = kilogram 4

Ogologo 1 (awa ₁ ) = mita 12

Ogologo 2 (awa ₂ ) = mita 9

Achọtara: Ntụnyere ike nwere ike nke ihe 1 na ihe 2

Ngwọta:

PE = mgh

m = oke (nkeji mba ụwa ya bụ kilogram, nke a kpọrọ kilogram mkpụmkpụ)

g = osooso n'ihi ike ndọda (nkeji mba ụwa ya bụ mita kwa sekọnd, nke a kpọchiri akpọchi m/s ² )

h = elu (nkeji mba ụwa ya bụ mita, nke a kpọrọ m)

PE = ike ike ndọda (nkeji mba ụwa ya bụ kg m ² / s ² ma ọ bụ Joule)

Ike ike ndọda nke ihe 1:

EP ₁ = m ₁ gh ₁ = (2) (g) (12) = 24 g

Ike ike ndọda nke ihe 2:

EP ₂ = m ₂ gh ₂ = (4) (g) (9) = 36 g

Ntụnyere ike nwere ike nke ihe 1 na ihe 2:

PE ₁ : PE ₂

24 g: 36 g

24: 36

24/12 : 36/12

2: 3

[wpdm_package id='1175′]

1. Ọrụ nke ike na-arụ site na nsogbu na ngwọta
2. Nsogbu na ngwọta ike ọrụ-kinetic
3. Nsogbu na ngwọta nke ụkpụrụ ike ọrụ-mekaniki
4. Nsogbu na ngwọta ike nwere ike ike ndọda
5. Ike nwere ike nke nsogbu na ngwọta nke mmiri na-agbanwe agbanwe
6. Nsogbu na ngwọta ike
7. Ojiji nke nchekwa ike igwe maka mmegharị ọdịda n'efu
8. Ojiji nke nchekwa ike igwe maka mmegharị elu na ala na mmegharị ọdịda efu
9. Ojiji nke nchekwa ike igwe maka mmegharị n'elu gbagọrọ agbagọ
10. Ojiji nke nchekwa ike igwe maka mmegharị n'elu elu gbagọrọ agbagọ
11. Ojiji nke nchekwa ike igwe maka mmegharị ihe atụ

GỤKWUO

1. Igbe 2-kg na-ebelata ọsọ site na 10 m/s gaa n'izu ike. Ọnụọgụ nke esemokwu kinetic bụ 0.2. Ọsọ ọsọ nke ike ndọda bụ 10 m/s ^2. Kedu ka oke nke mgbanwe si dị?

A maara;

Ibu (m) = 2 kg

Ọsọ mbụ (v _o ) = 10 m/s

Ọsọ ikpeazụ (v _t ) = 0 m/s

Ọnụọgụ nke esemokwu kinetic ( _μk ) = 0.2

Ibu (w) = mg = (1 kg)(10 m/s ² ) = 10 kg m/s ² = 10 N

Achọsiri ike: Oke nke mbugharị (d)

Ngwọta:

Ụkpụrụ ike ọrụ-mekaniki :

W _nc = ΔEM

W _nc = ΔEK + ΔEP

W _nc = ½ m (v _t ² – v _o ² ) + mgh

W _nc = ọrụ nke ike na-abụghị nke nchekwa na-arụ na ihe ahụ

ΔEK = mgbanwe na ike kinetic

ΔEP = mgbanwe na ike nwere ike

m = oke

v = ọsọ

g = osooso n'ihi ike ndọda

h = mgbanwe dị elu

Mgbanwe dị n'ịdị elu h = 0 yabụ ΔEP = 0

W _nc = ΔEK

Ọrụ nke ndị na-abụghị ndị nchebara echiche na-arụ:

W _nc = -F _c d = – μ _k N d = – μ _k wd = – μ _k mgd

W _nc = -(0.2)(2)(10)(s)

W _nc = – (4)(2)

Akara mwepu ahụ na-egosi na ntụziaka nke ike esemokwu kinetic dị iche na ntụziaka nke mbugharị.

Mgbanwe na ike kinetic:

ΔEK = ½ m (v _t ² - v _o ² ) = ½ (2) (0 - 10 ² ) = 0 - 100 = -100

Oke nke mbugharị:

W _nc = ΔEK

– 4 s = – 100

s = -100/-4

s = 25 m

[irp]

2. Blọk na-ada n'ala n'elu oghere gbagọrọ agbagọ. Ọnụọgụ nke esemokwu kinetic bụ 0.4. Ọsọ ọsọ n'ihi ike ndọda bụ g = 10 ms ^-2 . Chọpụta ọsọ ikpeazụ mgbe blọk ahụ dara n'ala.

A maara:

Ogologo mbụ (h _o ) = 6 m

Ogologo ikpeazụ (h _t ) = 0 m

Ọsọ mbụ (v _o ) = 0

Ọnụọgụ nke esemokwu kinetic ( _μk ) = 0.4

Ọsọ ọsọ n'ihi ike ndọda (g) = 10 ms ^-2

cos θ = 8/10

Akụkụ kwụ ọtọ nke ibu = w _y = w cos θ = mg cos θ = m (10) (8/10) = m (10)(4/5) = m (40/5) = 8 m

Ike nkịtị = N = w _y = 8 m

Ike nke esemokwu kinetic = f _k = μ _k N = μ _k w _y = (0.4)(8 m) = 3.2 m

Achọrọ: Ọsọ ikpeazụ (v _t )

Ngwọta:

Ụkpụrụ ike ọrụ-mekaniki:

W _nc = Δ EM

W _nc = Δ EK + Δ EP

Mgbanwe na ike kinetic:

ΔEK = 1/2 m (v_t² - v_o²) = 1/2 m (v_t² - 0) = 1/2 mv_t²

Mgbanwe nke ike nwere ike:

Δ EP = mg (h _t – h _o ) = m (10)(0-6) = m (10)(-6) = – 60 m

Ọrụ a rụrụ site na ike nke kinetic friction:

W _nc = – f _k s = – ( 3.2 m)(10) = – 32 m

Akara mwepu ahụ na-egosi na ntụziaka ike nke esemokwu kinetic dị iche na ntụziaka nke mbugharị.

Ọsọ ikpeazụ (v _t ):

W _nc = Δ EK + Δ EP

- 32 m = 1/2 mv _t ² - 60 m

– 32 m = m (1/2 v _t ² – 60)

– 32 = 1/2 v _t ² – 60

– 32 + 60 = 1/2 v _t ²

28 = 1/2 v _t ²

2 (28) = v _t ²

56 = v _t ²

v _t = √4.14

v _t = 2 √14 ms ^-1

[irp]

3. Blọk na-ada n'ala n'elu mbara ihu gbagọrọ agbagọ. Ọsọ mbụ bụ 0 m/s, ọsọ ikpeazụ bụ 10 ms ^-1 . Ọ bụrụ na ike nke esemokwu kinetic bụ 2 N na ọsọ ọsọ n'ihi ike ndọda g = 10 ms ^-2 , gịnị bụ elu (h)?

A maara:

Ibu (m) = 1 kg

Ọsọ mbụ (v _o ) = 0 (nkwụsị ngọngọ)

Ọsọ ikpeazụ (v _t ) = 10 ms ^-1

Ogologo mbụ (h _o ) = h

Ogologo ikpeazụ (h _t ) = 0

Ike nke esemokwu kinetic (f _k ) = 2 N

Ọsọ ọsọ n'ihi ike ndọda (g) = 10 ms ^-2

Achọtara: Ogologo (h)

Ngwọta:

Ọrụ nke esemokwu kinetic rụrụ:

W _nc = – f _k s = – (2 )(15) = – 30

Akara mwepu ahụ na-egosi na ntụziaka ike nke esemokwu kinetic dị iche na ntụziaka nke mbugharị.

Mgbanwe na ike kinetic:

ΔEK = 1/2 m (v_t² - v_o²) = 1/2 (1)(10² - 0) = 1/2 (10²) = 1/2 (100) = 50

Mgbanwe nke ike nwere ike:

Δ EP = mg (h _t – h _o ) = (1)(10)(0-h) = (10)(-h) = -10 awa

Ụkpụrụ ike ọrụ-mekaniki:

W _nc = Δ EK + Δ EP

– 30 = 50 – 10 awa

Oge awa 10 = 50 + 30

10 h = 80

h = 80/10

h = 8m

4Ọ bụrụ na blọk agbadaa n'elu ụgbọelu gbadatụrụ nke na-adaghị ada, mgbe ahụ…
A. Ọrụ ike ndọda na-arụ na blọk ahụ karịrị mgbanwe nke ike nwere ike nke blọk ahụ.
B. Ike igwe na-abawanye
C. Oke ike kinetic na ike nwere ike ya na-ebelata
D. A na-arụ ọrụ ahụ site na ike esemokwu hà nhata mgbanwe na ike kinetic nke blọk ahụ
ngwọta

A ezighi ezi

Ọrụ nke ike ndọda na-arụ na blọk ahụ hà nhata mgbanwe nke ike ndọda nke blọk ahụ.

B ezighi ezi

Ọ bụrụ na mbara igwe dị n'ime ya dị nro, ike igwe nke ngọngọ ahụ na-agbanwe agbanwe. Mgbe ọ nọ n'elu mbara igwe ahụ na-agbanwe agbanwe ma ọ ka na-agagharị, ike igwe nke ngọngọ ahụ hà nhata ike ike ndọda. Ogwe ahụ ka na-ezu ike ya mere ike kinetic ya bụ efu. Mgbe ọ na-agbada n'ala elu nke gbagọrọ agbagọ, a na-ebelata elu nke ngọngọ ahụ ka ike ike ndọda ahụ na-ebelatakwa. Ike ike ndọda ahụ na-ebelata n'ihi na ọ na-agbanwe gaa na ike kinetic. Ọ bụ ezie na ike ike ndọda na-agbanwe gaa na ike kinetic mana ike igwe ahụ na-agbanwe agbanwe.

Ọ bụrụ na elu ahụ gbagọrọ agbagọ dị nkọ, ike igwe nke blọk ahụ na-ebelata n'ihi ọrụ ọjọọ nke ike esemokwu ahụ na-arụ. Ike esemokwu ahụ bụ ike na-adịghị mma. Ọrụ nke ike na-adịghị mma na-arụ n'ihe na-eme ka ike igwe nke ihe ahụ belata.

C ziri ezi

Ụgbọelu ahụ gbagọrọ agbagọ dị nkọ, ya mere e nwere ike esemokwu nke na-ama mmegharị nke blọk ahụ aka. Ike esemokwu ahụ bụ ike na-anaghị echekwa echiche. Ike ọrụ-mekaniki nke Theorem na-ekwu na ọrụ nke ike na-anaghị echekwa echiche (dịka ọmụmaatụ ike esemokwu) na-arụ hà nhata mgbanwe nke ike igwe. N'ọchụchọ a, ike igwe na-ebelata.

Ike mekaniki nke ngọngọ = ike ike ndọda + ike kinetic.

D ezighi ezi.

Ọrụ nke ike esemokwu na blọk ahụ na-arụ hà nhata mgbanwe nke ike igwe nke blọk ahụ, ọ bụghị mgbanwe nke ike kinetic nke blọk ahụ. N'eziokwu, ike esemokwu na-ama mmegharị nke blọk ahụ aka, ya mere ọ na-ebelata ọsọ nke blọk ahụ ma na-ebelata ike kinetic nke blọk ahụ. Mana ghọta na ike kinetic nke blọk ahụ sitere na ike ike ndọda. Ya mere, ọ bụ eziokwu na a na-arụ ọrụ ahụ site na ike esemokwu hà nhata mgbanwe na ike igwe (ike igwe na-ebelata).

Azịza ya ziri ezi bụ C.

5. A na-akụ ihe dị n'ala siri ike ka ọ na-agagharị ruo sekọnd atọ wee kwụsị. Ọ bụrụ na ibu ihe a maara dị ka gram 10, ike esemokwu dị n'etiti ihe ahụ na ala bụ kilodyne 2. Chọpụta ọrụ ike esemokwu ahụ rụrụ.

A. 0.18 J

B. -0.18 J

C. 0.36 J

D. -0.36 J

A maara:

Oge etiti oge (t) = sekọnd 3

Ọsọ ikpeazụ (v _t ) = 0 m/s (ihe ndị na-ezu ike)

Ibu ihe (m) = gram 10 = 10/1000 kg = 1/100 kg = 0.01 kg

Ike esemokwu (F) = 2 kilodynes = 2 x ¹⁰ dynes

Achọtara: Ọrụ (W) ejiri ike esemokwu rụọ

Ngwọta:

Mgbanwe nke nkeji nke ike:

1 Newton = 1 x 10 ⁵ dyne

1 dyne = 1 / 10 ⁵ Newtons = 1 x 10 ^-5 Newtons = 10 ^-5 Newtons

Ike esemokwu (F) = 2 x 10 ³ dyne = 2 x 10 ³ x 10 ^-5 Newton = 2 x 10 ^-2 Newton = 2/100 Newton = 0.02 Newton

Ike ọrụ-mekaniki nke Theorem na-ekwu na ike na-adịghị mma na-arụ ọrụ n'ihe hà nhata mgbanwe na ike mekaniki nke ihe ahụ.

Ọ bụrụ na ihe na-agagharị n'elu mbara elu ahụ nke na-agbanwe agbanwe, ike mekaniki (ME) = ike ndọda ike (PE) + ike mmegharị ahụ (KE). Mana ọ bụrụ na ihe ahụ na-agagharị naanị n'elu mbara elu kwụ ọtọ, yabụ na ọ dịghị mgbanwe n'ịdị elu ike mekaniki = ike mmegharị ahụ. N'elu mbara elu kwụ ọtọ, ike ndọda ike bụ efu n'ihi na enweghị mgbanwe n'ịdị elu.

Ike esemokwu bụ ike na-anaghị agbanwe agbanwe. Ike esemokwu na-ebelata ọsọ ihe na ike mmegharị ahụ nke ihe. Enwere ike ikwubi na ọrụ ike esemokwu na-arụ na ihe hà nhata mbelata nke ike igwe.

N'ime mgbakọ na mwepụ:

Ọrụ (W) = Mgbanwe nke ike igwe (ΔEM)

F s = ΔEP + ΔEK

F s = mg Δh + ½ m (v _t ² – v _o ² )

F s = mg (0) + ½ m (0 ² – v _o ² )

F s = 0 + ½ m (– (v _o ² ))

F s = – ½ mv _o ² ———— Nhata 1

Nkọwa: F = ike esemokwu, d = mbugharị, m = oke, v _o = ọsọ mbụ

A mabeghị mbugharị (d) na ọsọ mbụ (v _{o ) n'ihi na buru ụzọ gbakọọ v o} ma ọ bụ d. Ọrụ emere site na ike esemokwu agbakọọ site na iji otu n'ime nha anya mgbe a mara v _o ma ọ bụ d.

Usoro nke mwepụ (d) na mmegharị ahịrị na-abụghị otu ụdị:

v _t ² = v _o ² + 2 (-a) s

Ọsọ ikpeazụ (v _t ) = 0 na osooso (a) bụ nke na-adịghị mma n'ihi na ihe ahụ na-ebelata (ọsọ nke ihe ahụ na-ebelata).

0 = v_o² – mgbasa ozi 2

v_o² = mgbasa ozi 2

d = v _o ² / 2 a ———— Nha nke 2

Gbanwee d na nhazi 2 na d na nhazi 1:

F d = – ½ mv _o ²

F (v _o ² /2a) = – ½ mv _o ²

(F/2a) v _o ² = – ½ mv _o ²

F/2a = – ½ m

F = (2)(a)(-1/2)(m)

F = – (a)(m)

a = – (F / m)

a = – 0.02 Newtons / kilogram 0.01

a = – 2 Newton/kilogram

a = – 2 m/s ²

Nha nhata iji gbakọọ ọsọ mbụ (v _o ) na mmegharị ahịrị na-abụghị otu:

v _t = v _o + na —–> Ọsọ ikpeazụ (v _t ) = 0, Ọsọ ọsọ (a) = 2 m/s ² , oge etiti oge (t) = sekọnd 3

0 = v _o + (-2)(3)

0 = v _o – 6

v _o = mita 6/sekọnd

Ọrụ (W) nke ike esemokwu rụrụ:

W = - ½ mv _o ² = -1/2 (0.01) (6 ² ) = -1/2 (0.01) (36)

W = -1/2 (0.36)

W = – Joule 0.18

Ọrụ nke ike esemokwu ahụ rụrụ bụ ihe na-adịghị mma nke pụtara na ọrụ ahụ na-ebelata ike igwe nke ihe ahụ.

Ọ bụrụ na a maara d, enwere ike ịgbakọ ọrụ ahụ site na iji usoro W = F d.

Azịza ya ziri ezi bụ B.

[wpdm_package id='1178′]

1. Ọrụ nke ike na-arụ site na nsogbu na ngwọta
2. Nsogbu na ngwọta ike ọrụ-kinetic
3. Nsogbu na ngwọta nke ụkpụrụ ike ọrụ-mekaniki
4. Nsogbu na ngwọta ike nwere ike ike ndọda
5. Ike nwere ike nke nsogbu na ngwọta nke mmiri na-agbanwe agbanwe
6. Nsogbu na ngwọta ike
7. Ojiji nke nchekwa ike igwe maka mmegharị ọdịda n'efu
8. Ojiji nke nchekwa ike igwe maka mmegharị elu na ala na mmegharị ọdịda efu
9. Ojiji nke nchekwa ike igwe maka mmegharị n'elu gbagọrọ agbagọ
10. Ojiji nke nchekwa ike igwe maka mmegharị n'elu elu gbagọrọ agbagọ
11. Ojiji nke nchekwa ike igwe maka mmegharị ihe atụ

GỤKWUO

Ike ọrụ-kinetic :

1. Ụgbọala dị kilogram 5000 gbapụrụ ọsọ site n'ikuku ruo mita 20/s. Chọpụta ọrụ netwọk e mere n'ụgbọala ahụ.

A maara:

Ibu (m) = 5000 kg

Ọsọ mbụ (v _o ) = 0 m/s ( ezumike ụgbọ ala )

Ọsọ ikpeazụ (v _t ) = 20 m/s

Achọrọ : netwọkụ

Ngwọta:

Ụkpụrụ ike ọrụ-kinetic :

W _net = Δ EK

W _ụgbụ = ½ m (v _t ² - v _o ² )

W _net = ọrụ net

Δ EK = mgbanwe na ike kinetic

m = oke ibu (kg),

v _t = ọsọ ikpeazụ (m/s),

v _o = ọsọ mbụ (m/s).

Netwọk:

W _ụgbụ = ½ m (v _t ² - v _o ² )

W _ụgbụ = ½ (5000) (20 ² - 0 ² )

W _net = (2500)(400 – 0)

W _net = (2500)(400)

_Net W = Joule 1000,000

[irp]

2. Ihe dị kilogram iri na-agba ọsọ site na m5/s ruo m10/s. Chọpụta ọrụ netwọk e mere na ihe ahụ!

A maara:

Ibu (m) = 10 kg

Ọsọ mbụ (v _o ) = 5 m/s

Ọsọ ikpeazụ (v _t ) = 10 m/s

Achọrọ : netwọkụ

Ngwọta:

Netwọk:

W _net = Δ EK

W _ụgbụ = ½ m (v _t ² - v _o ² )

W _ụgbụ = ½ (10) (10 ² - 5 ² )

W _net = (5)(100 – 25)

W _net = (5)(75)

_Net W = Joule 375

3. Ụgbọala dị kilogram 2000 na-ebelata ọsọ site na m10/s ruo m5/s. Gịnị ka a na-arụ n'ụgbọala ahụ?

A maara:

Ibu ụgbọ ala (m) = 2000 kg

Ọsọ mbụ (v _o ) = 10 m/s

Ọsọ ikpeazụ (v _t ) = 5 m/s

Achọrọ: netwọk

Ngwọta:

Netwọk:

W _net = Δ EK

W _ụgbụ = ½ m (v _t ² - v _o ² )

W _ụgbụ = ½ (2000) (5 ² - 10 ² )

W _net = (1000)(25 – 100)

W _net = (1000)(-75)

W _net = -75,000 Joule

Akara mwepu ahụ na-egosi na ntụziaka nke mbugharị dị iche na ntụziaka nke ike ụgbụ.

4. Ike na-agbanwe agbanwe nke 60-N nke e tinyere n'elu ihe dị kilogram iri ruo sekọnd iri na abụọ. Ọsọ mbụ nke ihe bụ 6 m/s, ebe ntụziaka nke ihe ahụ bụ otu ihe ahụ dị ka ntụziaka nke ike ahụ.

(1) Ọrụ e mere na ihe ahụ bụ Joules 30,240

(2) Ike kinetic ikpeazụ bụ joules 30,240

(3) Ike bụ Watt 2,520

(4) Mmụba nke ike kinetic nke ihe ahụ bụ 180 Joules

Okwu ndị ziri ezi bụ…

A maara:

Ike (F) = 60 N

Oge etiti oge (t) = sekọnd 12

Ibu ihe (m) = 10 kg

Ọsọ mbụ (v _o ) = 6 m/s

Achọtara: Okwu ndị ziri ezi

Ngwọta:

Ọsọ ọsọ nke ihe:

∑F = ma

60 = 10 a

a = 60 / 10 = 6 m/s ²

Ọsọ ikpeazụ:

v _t = v _o + na

v _t = 6 + (6)(12)

v _t = 6 + 72

v _t = 78 m/s

Ogologo njem ahụ mere n'ime sekọnd iri na abụọ:

s = v _o t + 1/2 na ²

s = (6)(12) + 1/2 (6)(12) ²

s = 72 + (3)(144)

s = 72 + 432

s = mita 504

(1) Ọrụ e ji ike rụọ

W = F s = (60)(504) = 30,240 Joules

(2) Ike kinetic ikpeazụ

KE = 1/2 mv _t ² = 1/2 (10) (78) ² = (5) (6084) = 30,420 Joules

(3) Ike

P = W / t = 30,240 / 12 = 2,520 Joules/sekọnd

(4) Mmụba nke ike mmegharị ahụ

ΔKE = 1/2 mv _t ² - 1/2 mv _o ² = 1/2 m (v _t ² - v _o ² ) = 1/2 (10) (78 ² - 6 ² ) = 5 (6084 -36) = 5 (6048)

ΔKE = 30,240 Joule

[irp]

5. A na-arụ ọrụ buru ibu site na nọmba ihe...

Ngwọta:

Ọrụ netwọk = mgbanwe nke ike kinetic

W _ụgbụ = ½ m (v _t ² - v _o ² )

Ọrụ buru ibu karị:

W ₁ = ½ (8)(4 ² – 2 ² ) = (4)(16 – 4) = (4)(12) = 48 Joules

W ₂ = ½ (8)(5 ² –3 ² ) = (4)(25 – 9) = (4)(16) = 64 Joules

W ₃ = ½ (10)(6 ² – 5 ² ) = (5)(36 – 25) = (5)(11) = 55 Joules

W ₄ = ½ (10)(4 ² – 0 ² ) = (5)(16 – 0) = (5)(16) = 80 Joules

W ₅ = ½ (20)(3 ² – 3 ² ) = (10)(9 – 9) = (10)(0) = 0 Joules

6. Ụgbọala dị kilogram 4000 na-aga n'ahịrị kwụ ọtọ na mita 25/s. Ụgbọala ahụ na-ebelata nke na ọsọ ikpeazụ nke ụgbọala ahụ bụ mita 15/s. Gịnị ka a na-arụ n'ụgbọala ahụ?

A maara:

Ibu (m) = 4000 kg

Ọsọ mbụ (v _o ) = 25 m/s

Ọsọ ikpeazụ (v _t ) = 15 m/s

Achọtara : Arụọla ọrụ n'ụgbọala

Ngwọta:

W _net = ½ m (v _t ² – v _o ² ) = ½ (4000)(15 ² -25 ² ) = (2000)(225-625) = (2000)(-400) = -800,000 Joules = -800 kJ

[irp]

7. A tụbara 0.1-kg n'usoro na 6 m/s site na elu mita 5. Ọ bụrụ na ọsọ nke ike ndọda bụ 10 m/s ² , kedu ike kinetic nke bọọlụ ahụ n'ogo mita 2?

A maara:

Ibu (m) = 0.1 kg

Mgbanwe n'ịdị elu (h) = 5 m – 2 m = 3 mita

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọrọ: Ike kinetic n'ịdị elu nke mita 2.

Ngwọta:

Enwere ike ịghọta mmegharị projectile site na inyocha akụkụ kwụ ọtọ na kwụ ọtọ nke mmegharị ahụ iche iche. A na-enyocha mmegharị n'akụkụ kwụ ọtọ dị ka mmegharị ọsọ na mmegharị na-aga n'ihu na ntụziaka kwụ ọtọ nke a na-enyocha dị ka mmegharị ọdịda n'efu ma ọ bụ mmegharị kwụ ọtọ.

Ike mekanikal mbụ = ike ike ndọda.

PE = mgh = (0.1)(10)(3) = 3 Joules.

Ike mekanikal ikpeazụ = ike kinetic.

KE = 3 Joules.

8. Ụgbọala dị kilogram 1000 na-agba ọsọ site n'izu ike ma na-aga ọsọ ọsọ na mita 5/s. Kedu ọrụ ụgbọ ala na-arụ?

A maara:

Ibu (m) = 1000 kg

Ọsọ mbụ (v _o ) = 0

Ọsọ ikpeazụ (v _t ) = 5 m/s

A chọrọ ya: Ọrụ (W) nke ụgbọala rụrụ

Ngwọta:

W _ụgbụ = ½ m (v _t ² - v _o ² )

Ọrụ nke ụgbọala arụpụtara:

W _net = ½ (1000)(5 ² – 0 ² ) = (500)(25 – 0) = (500)(25) = 12,500 Joules

[irp]

9. A na-atụba bọọlụ gram 500 n'elu elu site n'elu ụwa site na ọsọ mbụ nke m10/s ^2. Ọsọ ọsọ nke ike ndọda bụ 10 ms ^-2 . Gịnị bụ ọrụ ike ibu na-arụ mgbe bọọlụ ahụ ruru elu kachasị elu?

A maara :

Ibu bọọlụ (m) = gram 500 = 0.5 kg

Ọsọ mbụ (v _o ) = 10 m/s ²

Ọsọ ikpeazụ (v _t ) = 0 (ọsọ n'ebe kachasị elu)

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

A chọrọ: Ọrụ (W) nke a ga-arụ site na ibu

Ngwọta:

Ọrụ netwọk nke ike net na-arụ na ihe = mgbanwe na ike kinetic.

W _net = ΔEK = EK _t – EK _o

Wnet = ½ mv _t ² – ½ mv _o ² = ½ m (v _t ² – v _o ² )

KE _t = ike kinetic ikpeazụ, KE _o = ike kinetic mbụ, m = oke nke ihe, v _t = ọsọ ikpeazụ nke ihe, v _o = ọsọ mbụ nke ihe.

Netwọk:

W _ụgbụ = ½ m (v _t ² - v _o ² ) = ½ (0.5) (0 ² - 10 ² )

_Net W = (0.25)(-100) = -25 Joules

Akara mwepu na-egosi na ụzọ mwepụ dị iche na ibu bọọlụ ahụ. Ụzọ bọọlụ ahụ kwụ ọtọ, ụzọ ibu ahụ dịkwa kpọmkwem.

10. Ihe dị kilogram 1 n'enweghị ihe na-ada, ọdịiche dị n'ịdị elu ya bụ mita 2.5. Ọsọ ọsọ nke ike ndọda bụ 10 ms ^-2 . Gịnị ka a na-arụ n'ihe ahụ?

A maara:

Ibu nke bọọlụ (m) = 1 kg

Ọsọ mbụ (v _o ) = 0 m/s

Ogologo (h) = mita 2.5

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọsiri ike: Ọrụ netwọk n'oge mbugharị

Ngwọta:

Ọsọ ikpeazụ nke bọọlụ (v _t )

A na-agbakọ ya site na iji usoro mmegharị ọdịda efu. A maara ya: Ọsọ ọsọ n'ihi ike ndọda (g) = 10 m/s ² , Mgbanwe na elu bọọlụ (h) = mita 2.5. Achọrọ: Ọsọ ikpeazụ.

v _t ² = 2 gh = 2(10)(2.5) = 2(25)

v _t = √2(25)

v _t = 5√2

Ọrụ netwọk = mgbanwe na ike kinetic

W _net = ΔEK = ½ m (v _t ² - v _o ² ) = ½ (1) {(5√2) ² - 0 ² }

W _net = ½ (25)(2) = 25 Joule

[irp]

11. Ihe dị kilogram 2 na-aga na kilomita 72/awa. Mgbe ọ gachara mita 400, ọsọ ikpeazụ nke ihe ahụ bụ kilomita 144/awa. Ọsọ ọsọ nke ike ndọda bụ 10 ms ^-2 . Chọta ọrụ netwọk.

A maara:

Ibu ihe (m) = 2 kg

Ọsọ mbụ (v _o ) = 72 km/awa = 20 m/s

Ọsọ ikpeazụ (v _t ) = 144 km/h = 40 m/s

Ogologo = mita 400

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọrọ: Netwọk

Ngwọta:

Ọrụ netwọk = mgbanwe nke ike kinetic

W _net = ΔEK = ½ m (v _t ² - v _o ² ) = ½ (2) (40 ² - 20 ² }

W _net = ½ (2)(1600 – 400) = 1200 Joules

12. Ihe dị kilogram abụọ na-aga na 2 ms ^–1 . Ọrụ e mere na ihe ahụ bụ 21 Joules. Gịnị bụ ọsọ ikpeazụ nke ihe ahụ.

A maara:

Ibu (m) = 2 kg

Ọsọ mbụ (v _o ) = 2 m/s

Ọrụ (W) = 21 Joule

Achọrọ: ọsọ ikpeazụ (v _t )

Ngwọta:

W _net = ΔEK

W _net = 1/2 mv _t ² -1/2 mv _o ²

W _ụgbụ = 1/2 m (v _t ² - v _o ² )

21 = 1/2 (2) (v _t ² – 2 ² )

21 = (v _t ² – 2 ² )

21 = v _t ² – 4

v _t ² = 21 + 4 = 25

v _t = √25

v _t = 5 m/s

[irp]

1 3. Ike na-adịgide adịgide nke 8 N na-arụ ọrụ n'ihe nwere oke nke 16 kg. Ọ bụrụ na ihe ahụ ezuo ike na mbụ, chọpụta ọsọ nke ihe ahụ mgbe ike ahụ mere ihe ahụ ruo sekọnd anọ.

A maara:

Ike na-adịgide adịgide (F) = 8 Newton

Ibu ihe (m) = 16 kg

Ọsọ mbụ nke ihe (v _o ) = 0 m/s

Ike oge na-arụ ọrụ na ihe (t) = sekọnd 4

Achọtara: Ọsọ ikpeazụ (v _t )

Ngwọta:

Ọrụ = Mgbanwe na ike mmegharị ahụ

W = KE ikpeazụ – KE mbụ

W = ½ mv _t ² – ½ mv _o ²

W = ½ mv _t ² – 0

W = ½ mv _t ² —— Nha nke 1

Ọrụ = Ike x Mbugharị

W = F d

W = 8 d

Jiri usoro nhazi nke mmegharị ahịrị na-abụghị otu ụdị dị n'okpuru gbakọọ mgbanwe (d):

d = v _o t + ½ na ²

d = mbugharị, v _o = ọsọ mbụ, t = oge etiti oge, a = osooso

d = 0 + ½ na ² = ½ na ² —-> a = (v _t – v _o ) / t = v _t / t

d = ½ (v _t / t) t ²

^d = ½ (v _t ) t

Gbanwee mgbanwe (d) na nha anya nke Ọrụ na mgbanwe (d) na nha anya a:

W = 8 d

W = 8(1/2)(v _t )(t)

W = (4)(v _t )(t) —— nha anya 2

Nha 1 = Nha 2

W = W

½ mv _t ² = (4)(v _t )(t)

½ mv _t = (4)(t)

½ (16)(v _t ) = 4(4)

8 v _t = 16

v _t = 16/8

v _t = mita 2/sekọnd

14. Iji mee ka ọsọ ihe dịkwuo elu, ọ bụrụ na ọ bụ ugboro abụọ nke ọsọ mbụ, chọpụta ọrụ achọrọ n'usoro a…

A maara:

Ibu ihe (m) = 1 kg

Ọsọ mbụ (v _o ) = 1 m/s

Ọsọ ikpeazụ (v _t ) = 2 x ọsọ mbụ = 2 x 1 = 2 m/s

A chọrọ ya: Ọrụ

Ngwọta:

Ike kinetic mbụ:

KE mbụ = ½ mv _o ² = ½ (1) (1) ² = ½ (1) (1) = ½ (1) = 0.5

Ike kinetic ikpeazụ mgbe ọsọ nke ihe ahụ ghọrọ ugboro abụọ nke ọsọ mbụ ya:

TO ikpeazụ = ½ mv _t ² = ½ (1)(2) ² = ½ (4) = 2

Usoro nke ike ọrụ-kinetic:

Ọrụ = Mgbanwe na ike mmegharị ahụ

Ọrụ = Ike kinetic ikpeazụ - ike kinetic mbụ

Ọrụ = 2 – 0.5

Ọrụ = 1.5

Ike kinetic mbụ = 0.5

Ọrụ = 3 x 0.5 = 1.5

Ọrụ achọrọ ugboro atọ nke ike kinetic mbụ ya.

15. Ụgbọala nwere ibu nke kilogram 1500 na-agagharị na ọsọ nke kilomita 36/awa n'okporo ụzọ kwụ ọtọ ma dị nro. Ụgbọala ahụ gbapụrụ ọsọ ruo kilomita 72/awa. Chọpụta ọrụ achọrọ iji mee ka ụgbọ ala ahụ dị ngwa ngwa.

A maara:

Ibu ụgbọ ala (m) = 1500 kg

Ọsọ mbụ nke ụgbọ ala (v _o ) = 36 km/awa = mita 36,000 / sekọnd 3600 = mita 10/sekọnd

Ọsọ ikpeazụ nke ụgbọ ala (v _t ) = 72 km/awa = mita 72,000 / sekọnd 3600 = mita 20/sekọnd

Achọtara: Ọrụ achọrọ iji mee ka ụgbọ ala ahụ dị ngwa ngwa

Ngwọta:

Usoro nke ike ọrụ-kinetic:

W = EK ikpeazụ – EK mbụ

W = ½ mv _t ² – ½ mv _o ² = ½ m (v _t ² –v _o ² )

W = ½ (1500)(20 ² – 10 ² )

W = ½ (1500)(400 – 100)

W = ½ (1500)(300)

W = (1500)(150)

W = Joules 225,000

16. Ihe nwere ibu nke kilogram 2 na-amalite ibugharị na ọsọ nke kilomita 72. awa ^-1 . Mgbe ọ kwagara n'okporo ụzọ kwụ ọtọ ruo mita 400, ọsọ nke ihe ahụ bụ kilomita 144. awa ^-1 . Chọpụta ọrụ niile dị na ihe ahụ.

A maara:

Ibu ihe (m) = 2 kg

Ọsọ mbụ (v _o ) = 72 km/awa = mita 72,000 / sekọnd 3600 = mita 20/s

Ọsọ ikpeazụ (v _t ) = 144 km/awa = mita 144,000 / sekọnd 3600 = mita 40/s

Mgbanwe nke ihe = mita 400

Achọrọ: Ọrụ netwọk na ihe ahụ

Ngwọta:

Usoro nke ike ọrụ-kinetic na-ekwu na ọrụ netwọk na-arụ ọrụ na ihe dịka mgbanwe nke ike kinetic nke ihe ahụ.

W net = TO ikpeazụ – TO mbụ

W net = ½ mv _t ² – ½ mv _o ²

W ụgbụ = ½ m (v _t ² - v _o ² )

W ụgbụ = ½ (2) (40 ² - 20 ² )

Net W = 1600 – 400

W net = 1200 Joule

Description:

W = Ọrụ, KE = ike mmegharị ahụ

Ike kinetic

17. Mgbọ gram iri na-agagharị na 100 m/s. Kedu ike kinetic nke mgbọ ahụ?

A maara:

Ibu nke mgbọ (m) = gram 10 = kilogram 10/1000 = kilogram 1/100 = kilogram 0.01

Ọsọ mgbọ (v) = mita 100/sekọnd

Achọrọ: Ike Kinetic

Ngwọta:

KE = 1/2 mv ²

KE = 1/2 (0,01 kg)(100 m/s) ²

KE = 1/2 (0,01 n'arọ) (10.000 m ² / s ² )

KE = (0,01 n'arọ) (5000 m ² / s ² )

KE = 50 kg m ² / s ²

KE = 50 Joule

[wpdm_package id='1191′]

1. Ọrụ nke ike na-arụ site na nsogbu na ngwọta
2. Nsogbu na ngwọta ike ọrụ-kinetic
3. Nsogbu na ngwọta nke ụkpụrụ ike ọrụ-mekaniki
4. Nsogbu na ngwọta ike nwere ike ike ndọda
5. Ike nwere ike nke nsogbu na ngwọta nke mmiri na-agbanwe agbanwe
6. Nsogbu na ngwọta ike
7. Ojiji nke nchekwa ike igwe maka mmegharị ọdịda n'efu
8. Ojiji nke nchekwa ike igwe maka mmegharị elu na ala na mmegharị ọdịda efu
9. Ojiji nke nchekwa ike igwe maka mmegharị n'elu mgbagọ
10. Ojiji nke nchekwa ike igwe maka mmegharị n'elu elu gbagọrọ agbagọ
11. Ojiji nke nchekwa ike igwe maka mmegharị ihe atụ

GỤKWUO

1. Mmadụ na-adọkpụ blọk 2 m n'elu elu kwụ ọtọ site na ike na-adịgide adịgide F = 20 N. Chọpụta ọrụ e ji ike F rụọ na blọk ahụ.

A maara:

Ike (F) = 20 N

Mbugharị (s) = 2 m

Nkuku (θ ) = 0

Achọtara : Ọrụ (W)

Ngwọta:

W = F d cos θ = (20) (2) (cos 0) = (20) (2) (1) = 40 Joules

[irp]

2. Ike F = 10 N na-arụ ọrụ n'ime igbe 1 m n'akụkụ elu kwụ ọtọ. Ike ahụ na-arụ ọrụ n'akụkụ 30 ^o dịka egosiri na eserese dị n'okpuru. Chọpụta ọrụ e ji ike F rụọ!

A maara :

Ike (F) = 10 N

Ike kwụ ọtọ (F _x ) = F cos 30 ^o = (10)(0.5√3) = 5√3 N

Mbugharị (d) = 1 mita

Achọrọ m : Ọrụ (W)?

Ngwọta :

W = F _x d = (5√3)(1) = 5√3 Joules

3. Ahụ mmadụ na-ada site n'izu ike, site n'ịdị elu nke mita 2. Ọ bụrụ na ọsọ ọsọ nke ndọda n'ihi ike ndọda bụ 10 m/s ² , chọpụta ọrụ e ji ike ndọda rụọ!

A maara:

Ibu ihe (m) = 1 kg

Ogologo (h) = 2 m

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọtara: Ọrụ e ji ike ndọda (W) rụọ

Ngwọta:

W = F d = wh = mgh

W = (1)(10)(2) = Joule 20

W = ọrụ, F = ike, d = anya, w = ibu , h = elu, m = oke, g = osooso n'ihi ike ndọda.

[irp]

4. A na-ejikọ ihe dị kilogram 1 n'ime mmiri ka o wee dị ogologo ruo sentimita 2. Ọ bụrụ na ọsọ ọsọ n'ihi ike ndọda bụ mita 10/s ² , chọpụta (a) ọrụ nke ike mmiri (b) nke mmiri na-arụ n'elu ihe

A maara:

Ibu (m) = 1 kg

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Ogologo (x) = 2 cm = 0.02 m

Ibu (w) = mg = (1 kg)(10 m/s ² ) = 10 kg m/s ² = 10 N

Achọtara: Oge opupu ihe ubi na-agbanwe agbanwe na ọrụ spring force rụrụ

Ngwọta:

(a) Oge opupu ihe ubi na-agbanweghi agbanwe

Usoro iwu Hooke :

F = k x.

k = F / x = w / x = mg / x

k = (1)(10) / 0.02 = 10 / 0.02

k = 500 N/m

(b) ọrụ nke spring force rụrụ

W = – ½ kx ²

W = – ½ (500)(0.02) ²

W = – (250)(0.0004)

W = -0.1 Joule

Akara mwepu na-egosi na ntụziaka nke ike mmiri dị iche na ntụziaka nke mbugharị ihe.

[irp]

5. Ike F = 10 N na-eme ka igbe dị ngwa karịa ebe a na-agagharị ruo mita 2. Ala ahụ siri ike ma na-eme ka ike esemokwu dị na _{ya pụta ìhè .} Kw = 2 N. Chọpụta ọrụ netwọk e mere na igbe ahụ.

A maara:

Ike (F) = 10 N

Ike nke esemokwu kinetic (F _k ) = 2 N

Mbugharị (d) = 2 m

Achọrọ: Netwọk ( _{netwọk W} )

Ngwọta:

Ọrụ nke ike F rụrụ:

W ₁ = F d cos 0 = (10)(2)(1) = 20 Joules

Ọrụ a na-arụ site n'ike nke esemokwu kinetic (F _k ):

W ₂ = F _k d = (2)(2)(cos 180) = (2)(2)(-1) = -4 Joules

Netwọk:

W _net = W ₁ – W ₂

Netw = 20 – ₄

_Net W = Joule 16

6. Gịnị bụ ọrụ nke ike F na-arụ na blọk ahụ?

A maara:

Ike (F) = 12 Newton

Mbugharị (d) = mita 4

Achọtara: Ọrụ (W)

Ngwọta:

W = F d = (12 Newton)(mita 4) = 48 N m = 48 Joules

[irp]

7. Ike nke 200 N na-akwali otu ngọngọ. Mgbanwe nke blọk ahụ bụ mita abụọ. Gịnị ka a na-arụ n'blọk ahụ?

A maara:

Ike (F) = 200 Newton

Mbugharị (d) = mita 2

Achọtara: Ọrụ (W)

Ngwọta:

Ọrụ:

W = F s

W = (Newton 200)(mita 2)

W = 400 N m

W = Joule 400

8. Onye ọkwọ ụgbọala nke ụgbọala sedan chọrọ ịdọba ụgbọala ya kpọmkwem mita 0.5 n'ihu ụgbọala ahụ nke dị mita 10 site n'ebe ụgbọala sedan dị. Gịnị ka ụgbọala sedan chọrọ?

A maara:

Mbugharị (d) = mita 10 – mita 0.5 = mita 9.5

Ike (F) = 50 Newton

Achọtara: Ọrụ (W)

Ngwọta:

W = F s

W = (Newton 50)(mita 9.5)

W = 475 N m

W = Joule 475

[irp]

9.

Tom na Jerry rụrụ ọrụ ka ụgbọala ahụ wee nwee ike ịga ije ruo mita anọ. Ike Tom na Jerry na-arụ bụ 50 N na 70 N.

A maara:

Mbugharị (s) = mita 4

Ike net (F) = 50 Newtons + 70 Newtons = 120 Newtons

Achọtara: Ọrụ (W)

Ngwọta:

W = F s = (120 Newton)(mita 4) = 480 N m = 480 Joules

10. Onye ọkwọ ụgbọala na-adọkpụ ụgbọala ka ụgbọala ahụ wee ruo 1000 cm. Gịnị ka a na-arụ n'ụgbọala ahụ?

A maara:

Ike (F) = 250 Newton

Mbugharị = 1000 cm = 1000/100 mita = mita 10

Achọtara: Ọrụ (W)

Ngwọta:

W = F s = (250 Newton)(mita 10) = 2500 N m = 2500 Joules

11. Dabere na eserese dị n'okpuru, ọ bụrụ na ọrụ e ji ike net rụọ bụ joules 375, chọpụta ebe ihe si apụta.

A maara:

Ọrụ (W) = Joule 375

Ike netwọk ( ΣF) = 40 N + 10 N - 25 N = 25 Newton ( n'aka nri )

Achọtara: Mbugharị ( d )

Ngwọta:

Usoro ọrụ:

W = F s

Mgbanwe nke ihe:

d = W / F = 375 Joules / 25 Newtons

d = mita 15 s

12. Ihe ndị dị n'okpuru ebe a na-anaghị arụ ọrụ bụ …

A. Tụgharịa ihe ruo mita iri

B. Pịa ụgbọala ruo mgbe ọ ga-agagharị

C. Pịa mgbidi

D. Adọtara m igbe

Ngwọta:

Usoro ọrụ:

W = ΣF s

W = ọrụ , F = ike , d = mwepụ

Dabere na usoro dị n'elu, a na-arụ ọrụ site n'ike ma enwere mgbanwe.

Azịza ya ziri ezi bụ C.

1 3. Andrew na-akwali ihe nwere ike nke 20 N ka ihe ahụ wee na-agagharị n'usoro okirikiri na radius nke mita 7. Chọpụta ọrụ Andrew rụrụ maka mmegharị okirikiri ugboro abụọ.

A. 0 Joule

B. 1400 Joule

C. 1540 Joule

D. 1760 Joule

Ngwọta:

Ọ bụrụ na onye ahụ akwaa oche nkwagharị ahụ ugboro abụọ n'imegharị okirikiri, onye ahụ na oche nkwagharị ahụ ga-alaghachi n'ọnọdụ mbụ ya, yabụ mgbanwe nke onye ahụ agaghị adị.

Mbugharị = 0 yabụ ọrụ = 0.

Azịza ya bụ A.

14. Mmadụ na-akwali ihe n'ala site n'ike nke 350 N. Ala ahụ na-eme ka ike esemokwu nke 70 N. Chọpụta ọrụ e ji ike mee iji kwaga ihe ahụ ruo mita isii.

A. 45 J

B. 72 J

C. 1680 J

D. 2580 J

A maara:

Ike nke push (F) = 350 Newtons

Ike esemokwu (F _fric ) = Newtons 70

Mgbanwe nke ihe (s) = mita 6

Achọtara: Ọrụ (W)

Ngwọta:

E nwere ike abụọ na-arụ ọrụ n'ihe ahụ, ike mkpali (F) na ike esemokwu (F _fric ). Ike mkpali ahụ nwere otu ụzọ ahụ dị ka mgbanwe nke ihe ahụ n'ihi na ike mkpali ahụ na-arụ ọrụ dị mma. N'aka nke ọzọ, ike esemokwu ahụ nwere ụzọ dị iche na mgbanwe nke ihe ahụ ka ike esemokwu ahụ wee rụọ ọrụ na-adịghị mma.

Ọrụ a na-arụ site na ike push:

W = F d = (350 Newton)(mita 6) = 2100 Newton-mita = 2100 Joules

Ọrụ nke ike esemokwu na-arụ:

W = – (F _fric )(s) = – (70 Newton)(mita 6) = – 420 Newton-mita = – 420 Joules

Netwọk ahụ:

Net W = Joules 2100 – Joules 420

W net = 1680 Joule

Azịza ya ziri ezi bụ C.

15. Ike kwụ ọtọ nke Newton iri na anọ na-akwali ihe n'ala siri ike nke nwere ike esemokwu nke Newton iri. Chọpụta ọrụ netwọk nke ịkwaga ihe ahụ ruo mita asatọ.

A. 0.5 Joule

B. 3 Joule

C. 32 Joule

D. 192 Joule

A maara:

Ike nrụgide (F) = 14 Newton

Ike esemokwu (F _fric ) = Newtons 10

Mbugharị nke ihe (d) = mita 8

Achọtara: Ọrụ (W)

Ngwọta:

E nwere ike abụọ na-arụ ọrụ n'ihe, ike push (F) na ike esemokwu (F _fric ).

Ike nrụgide ahụ nwere otu ụzọ ahụ dị ka mgbanwe nke ihe ahụ ka ike nrụgide ahụ wee rụọ ọrụ dị mma. N'aka nke ọzọ, ike esemokwu ahụ nwere ụzọ dị iche dị ka mgbanwe nke ihe ahụ ka ike esemokwu ahụ wee rụọ ọrụ na-adịghị mma.

Ọrụ a na-arụ site na ike push:

W = F s = (14 Newton)(mita 8) = mita 112 Newton = 112 Joules

Ọrụ nke ike esemokwu na-arụ:

W = – (F _fric )(s) = – (10 Newton)(mita 8) = – 80 Newton mita = – 80 Joules

Netwọk ahụ:

Net W = Joules 112 – Joules 80

W net = 32 Joule

Azịza ya ziri ezi bụ C.

16. Chọpụta ọrụ netwọk dabere na eserese dị n'okpuru.

A. 360 Joule

B. 450 Joule

C. 600 Joule

D. 750 Joule

Ngwọta:

Ọrụ = Ike (F) x mwepụ (d)

Ọrụ = Mpaghara triangle 1 + Mpaghara rektangulu + Mpaghara triangle 2

Work = 1/2(40-0)(3-0) + (40-0)(9-3) + 1/2(40-0)(12-9)

Ọrụ = 1/2(40)(3) + (40)(6) + 1/2(40)(3)

Ọrụ = (20)(3) + 240 + (20)(3)

Ọrụ = 60 + 240 + 60

Ọrụ = Joule 360

Azịza ya bụ A.

17. A na - etinye otu osisi nke ogologo ya ruru sentimita iri isii n'ala kwụ ọtọ. Osisi ahụ kụrụ ya site na hama dị kilogram iri site n'ịdị elu ya ruru sentimita iri anọ n'elu osisi ahụ. Ọ bụrụ na ike iguzogide ala nkezi bụ 2 x 10 ³ N na ọsọ ọsọ nke ike ndọda bụ 10 m/s ² , mgbe ahụ osisi ahụ ga-abanye n'ime ala kpamkpam mgbe ọ kụsịrị.

A. 4

B. 16

C. 28

D. 30

A maara:

Ibu hama (m) = 10 kg

Ọsọ ọsọ nke ike ndọda (g) = 10 m/ s ²

Ibu hama (w) = mg = (10)(10) = 100 kg m/s ²

Mbugharị hama tupu ịkụ osisi ahụ (d) = 40 cm = 0.4 mita

Nguzogide nke osisi (F) = 2 x 10 ³ N = 2000 N

Ogologo osisi = 60 cm = 0.6 mita

Achọọla: Osisi ahụ ga-abanye kpamkpam n'ala mgbe ọ kụrụ….

Ngwọta:

Ọrụ a na-arụ na hama ahụ mgbe hama ahụ rutere ruo mita 0.4 bụ:

W = F d = ws = (100 N)(0.4 m) = 40 Nm = 40 Joules

Ọrụ nke ike iguzogide ala rụrụ:

W = F d = (2000 N)(0.6 m) = 1200 Nm = 1200 Joules

Osisi ahụ ga-abanye kpamkpam n'ime ala mgbe ọ kụchara….

Joules 1200 / Joules 40 = 30

Azịza ya ziri ezi bụ D.

[wpdm_package id='1192′]

1. Ọrụ nke ike na-arụ site na nsogbu na ngwọta
2. Nsogbu na ngwọta ike ọrụ-kinetic
3. Nsogbu na ngwọta nke ụkpụrụ ike ọrụ-mekaniki
4. Nsogbu na ngwọta ike nwere ike ike ndọda
5. Ike nwere ike nke nsogbu na ngwọta nke mmiri na-agbanwe agbanwe
6. Nsogbu na ngwọta ike
7. Ojiji nke nchekwa ike igwe maka mmegharị ọdịda n'efu
8. Ojiji nke nchekwa ike igwe maka mmegharị elu na ala na mmegharị ọdịda efu
9. Ojiji nke nchekwa ike igwe maka mmegharị n'elu mgbagọ
10. Ojiji nke nchekwa ike igwe maka mmegharị n'elu elu gbagọrọ agbagọ
11. Ojiji nke nchekwa ike igwe maka mmegharị ihe atụ

GỤKWUO

1. Anya Ụwa site na Anyanwụ bụ 149.6 x 10 ⁶ km, oge mgbanwe Ụwa bụkwa otu afọ. Gbakọọ T ² / r ³

A maara:

T = 1 afọ, r = 149.6 x 10 ⁶ km

Achọrọ : T ² / r ³ = … ?

Ngwọta :

k = T² /r³ = 1² / (149.6x10⁶)³ = 1 / (3348071.9 x 10¹⁸) = 2.98 x 10^-25 afọ²/ km³

[irp]

2. Ihe na-agbanwe agbanwe zuru ụwa ọnụ (G) = 6.67 x 10 ^-11 Nm ² /kg ² na Sun's 1.99 x 10 ³⁰ kg.

[irp]

3. Ogologo anya nke ụwa site na anyanwụ bụ 149.6 x 10 ⁶ km ebe nkezi anya nke Mercury site na anyanwụ bụ 57.9 x 10 ⁶ km. Oge mgbanwe ụwa bụ otu afọ, kedu oge mgbanwe Mercury?

A maara:

r nke Ụwa = 149.6 x 10 ⁶ km

r nke mercury = 57.9 x 10 ⁶ km

T nke Ụwa = 1 afọ

Achọrọ: T nke mercury?

Ngwọta:

[wpdm_package id='953′]

1. Iwu Newton nke nsogbu na ngwọta nke ike ndọda zuru ụwa ọnụ
2. Ike ndọda, nsogbu ibu, na ngwọta
3. Ngwa ngwa n'ihi nsogbu ndọda na ngwọta ya
4. Nsogbu na ngwọta nke satịlaịtị geosynchronous
5. Nsogbu na ngwọta nke iwu Kepler

GỤKWUO

1. Kedu ka elu satịlaịtị geosynchronous dị n'elu ụwa si dị?

G = ihe na-agbanwe agbanwe zuru ụwa ọnụ = 6.67 x 10 ^-11 N m ² /kg ²

M = Oke nke ụwa = 5.97 x 10 ²⁴ kg

T = Awa 24 = 24 (sekọnd 3600) = sekọnd 86,400 = 8.64 x 10 Sekọnd ⁴

ngwọta

Elu satịlaịtị dị n'elu ụwa = 4.22 x 10 ⁷ m = 4.22 x 10 ⁴ km = 42,200 km

Elu satịlaịtị dị n'elu ụwa = 6.38 x 10 ⁶ m = 6.38 x 10 ³ km = 6380 km

Ogologo satịlaịtị n'elu elu ụwa = anya satịlaịtị site na etiti ụwa - radius nke ụwa

Elu satịlaịtị dị n'elu ụwa = 42,200 km – 6380 km

Elu Satellite dị n'elu ụwa = 35,820 km

[irp]

2. Kedu ọsọ nke satịlaịtị geosynchronous?

Ihe na-agbanweghi agbanwe (G) = 6.67 x 10 ^-11 N m ² /kg ²

Oke nke ụwa (m _E ) = 5.97 x 10 ²⁴ kg

Anya dị n'etiti satịlaịtị na etiti ụwa (r) = 4.22 x 10 ⁷ m

ngwọta

ma ọ bụ jiri usoro a

[wpdm_package id='949′]

1. Iwu Newton nke nsogbu na ngwọta nke ike ndọda zuru ụwa ọnụ
2. Ike ndọda, nsogbu ibu, na ngwọta
3. Ngwa ngwa n'ihi nsogbu ndọda na ngwọta ya
4. Nsogbu na ngwọta nke satịlaịtị geosynchronous
5. Nsogbu na ngwọta nke iwu Kepler

GỤKWUO

1. Anya dị n'etiti onye dị kilogram 40 na onye dị kilogram 30 bụ mita 2. Kedu ka ike ndọda si dị n'akụkụ nke ọzọ. Ihe na-agbanwe agbanwe zuru ụwa ọnụ = 6.67 x 10 ^-11 N m ² / kg ²

A maara:

m ₁ = 40 kg, m ₂ = 30 kg, r = 2 m, G = 6.67 x 10 ^-11 N m ² / kg ²

Achọtara m: oke ike ndọda (F)?

Ngwọta:

[irp]

2. Anya dị n'etiti Ụwa na Ọnwa (r) bụ 3.84 x 10 ⁸ m. Kedu ka ike ndọda nke ọ bụla si arụ ọrụ n'ebe ibe ya nọ?

A maara:

Oke nke ụwa (m _E ) = 5.97 x 10 ²⁴ kg

Oke ọnwa (m _M ) = 7.35 x 10 ²² kg

Anya dị n'etiti etiti ụwa na etiti ọnwa (r) = 3.84 x 10 ⁸ m

Ihe na-agbanweghi agbanwe (G) = 6.67 x 10 ^-11 N m ² / kg ²

Achọtara: Oke ike ndọda (F)

Ngwọta:

[irp]

3. Gịnị bụ anya dị n'etiti Ụwa, otú ike ndọda nke ụwa na ọnwa si dị efu?

A maara:

Oke nke ụwa = 5.97 x 10 ²⁴ kg

Oke ọnwa = 7.35 x ¹⁰²² kg

Anya dị n'etiti etiti ụwa na etiti ọnwa (r) = 3.84 x 10 ⁸ m.

Ihe na-agbanweghi agbanwe zuru ụwa ọnụ ( G) = 6.67 x 10 ^-11 N m ² / kg ²

Achọtara: anya site n'ụwa

Ngwọta:

Ike ndọda nkịtị bụ efu.

Jiri usoro nhazi anọ:

A = – 6.35

B = – 7.68 x 10 ⁸

C = 87.76 x 10 ^-14

 

[wpdm_package id='955′]

1. Iwu Newton nke nsogbu na ngwọta nke ike ndọda zuru ụwa ọnụ
2. Ike ndọda, nsogbu ibu, na ngwọta
3. Ngwa ngwa n'ihi nsogbu ndọda na ngwọta ya
4. Nsogbu na ngwọta nke satịlaịtị geosynchronous
5. Nsogbu na ngwọta nke iwu Kepler

 

GỤKWUO