Ike ike ndọda - nsogbu na ngwọta

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

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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