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

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.

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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.

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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