Ike ike ndọda - nsogbu na ngwọta

1. Ahụ́ dị kilogram 1 free-ada site na izu ike, site na elu nke mita 10.

Kpebie:

(a) Ọrụ e ji ike rụọ of ndọda

(b) Mgbanwe dị na ike gravitational ike

Ọsọ ọsọ n'ihi ike ndọda (g) = 10 m/s²

A maara:

Mass (m) = 1 kg

Ogologo (h) = 10 m

Ọsọ ọsọ n'ihi ike ndọda (g) = 10 m/s²

Arọ (w) = mg = (1 kg)(10 m/s²) = 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.

ΔEP = 100 Joule

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 n'ihi ike ndọda (g) = 10 m/s²

A chọrọ: ọrụ e ji ike ibu rụọ

Ngwọta:

W = F d = w_x d = (5)(2) = 10 Joule

Ngwọta ọzọ:

Enweghị 30^o = awa / ụbọchị

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

3. Ihe dị gram 1,500 n'ime mita 20 n'elu ala, ịda n'ala n'efu. Kedu ike ndọda nke ihe ahụ nwere ike ime? Ọsọ ọsọ nke ndọda bụ 10 m/s².

A maara:

Ọsọ ọsọ n'ihi ike ndọda (g) = 10 m/s²

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

Ogologo (h) = mita 20

A chọrọ: Ike ndọda nwere ike

Ngwọta:

PE = mgh = (1.5 kg)(10 m/s²)(20 m) = 300 kg m²/s² = 300 Joule

4. Dabere na eserese dị n'okpuru, ọ bụrụ na ibu nke ihe 1 bụ kilogram 2 na ibu nke 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 nke ihe 2 (m₂) = 4 kilogram

Ogologo 1 (h₁) = mita atọ

Ogologo 2 (h₂) = mita atọ

Chọrọ: Cntụnyere 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/s²)

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

PE = ike ike ndọda (nkeji mba ụwa ya bụ kg m²/s² ma ọ bụ Joule)

Ike ike ndọda nke ihe 1:

EP₁ = m₁ gh₁= (2)(g)(12) = 24 g

Ike ike ndọda nke ihe 2:

EP₂ = m₂ gh₂ = (4)(g)(9) = 36 g

Cntụnyere ike nwere ike nke ihe 1 na ihe 2:

PE₁ : Pee₂

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