Ojiji nke nchekwa ike igwe maka mmegharị ọdịda n'efu - nsogbu na ngwọta

1. Ahụ́ nke dị kilogram 1 dara n'enweghị nsogbu site n'izu ike, site n'ịdị elu nke mita 80. Ọsọ ọsọ n'ihi ike ndọda is 10 m / s². Gịnị bụ ike mgbe ahụ dara n'ala.

A maara:

Mass (m) = 1 kg

elu (h) = mita iri asatọ

Ọsọ ọsọ n'ihi ike ndọda (g) = 10 m/s²

Chọrọ: ike kinetic mgbe ahụ dara n'ala

Ngwọta:

The mbụ mebere igwe (MỤ_o) = ike gravitational ike (Pee)

ME_o =PE = mgh = (1)(10)(80) = 800 Joules

Ike mekanikal ikpeazụ (ME_t) = ike (KE)

Ofkpụrụ nke nchekwa nke ike igwe :

ME_o =ME_t

PE = KE

800=KE

Ike kinetic ikpeazụ bụ 800 Joules.

2. Ahụ́ dị kilogram 4 free-ada site na izu ike, site n'ịdị elu nke mita 10. Ọsọ ọsọ n'ihi ike ndọda bụ 10 ms^-2Kedu ihe bụ ike kinetic na ọsọ dị mita ise n'elu ala?

A maara:

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

Ibu (m) = 4 kg

Ọsọ ọsọ n'ihi ike ndọda (g) = 10 m/s²

Chọrọ: Ike Kinetic dị mita 5 n'elu ala na ọsọ ahụ ruru mita 5 n'elu ala

Ngwọta:

(a) Ike Kinetic dị mita ise n'elu ala

Ike igwe mbụ (ME_o) = ike ike ndọda (PE)

ME_o =PE = mgh = (4)(10)(5) = 200 Joules

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

ME_t = KE

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

ME_o =ME_t

200=KE

Ike kinetic dị mita 5 n'elu ala bụ 200 Joules.

(B) ọsọ na 5 mitas n'elu ala

Ike igwe mbụ (ME_o) = ike igwe ikpeazụ (ME_t)

PE = KE

200 = ½ mv²

2(200) / 4 = v²

100 = v²

v = √100

v = 10 m / s

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

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

A maara:

elu (h) = mita 2s

Ọsọ ọsọ n'ihi ike ndọda (g) = 10 m/s²

A chọrọ: ọsọ mango mgbe ọ dara n'ala.

Ngwọta:

Ike igwe mbụ (ME_o) = ike ike ndọda (PE)

ME =PE = mgh = m (10)(2) = 20 m

Ike mekanikal ikpeazụ (ME_t) = ike nke kinetic (KE)

ME_t = KE = ½ mv²

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

ME_o =ME_t

20 m = ½ mv²

20 = ½ v²

2(20) = v²

40 = v²

v = √40 = √(4)(10) = 2√10 m/s

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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