Ojiji nke nchekwa ike igwe maka mmegharị n'elu ihe gbara okirikiri - nsogbu na ngwọta

1. Blọk 1-kg na-ada n'elu ala dị larịị gbagọrọ agbagọ. Chọpụta ike kinetic na ọsọ nke blọk ahụ n'elu ala kachasị ala. Ọsọ ọsọ nke ike ndọda bụ 10 m/s ².

A maara:

Ibu (m) = 1 kg

Mgbanwe n'ịdị elu (h) = 5 m

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Achọtara: Ike Kinetic (KE) na ọsọ nke blọk ahụ.

Ngwọta:

(a) Ike Kinetic

Ike mekanikal mbụ = ike ike ndọda

ME _o = PE = mgh = (1)(10)(5) = 50 Joules

Ike mekanikal ikpeazụ = ike kinetic

ME _t = KE = ½ mv _t ²

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

M _o = M _t

PE = KE

50 = KE

Ike Kinetic (KE) = 50 Joules.

(b) Ọsọ nke Blọk

Ụkpụrụ nke nchekwa ike igwe:

Ike mekanikal mbụ (ME _o ) = ike mekanikal ikpeazụ (ME _t )

Ike ike ndọda (PE) = ike kinetic (KE)

50 = ½ mv ²

2(50) / m = v ²

100 / 1 = v ²

100 = v ²

v = √100

v = 10 m/s

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2. Ihe dị kilogram abụọ na-amịda ala n'enweghị esemokwu. Kedu ike kinetic na ọsọ nke ihe ahụ na mita abụọ n'elu ala. Ọsọ ọsọ nke ike ndọda bụ 10 m/s ²

A maara:

Ibu (m) = 2 kg

Mgbanwe n'ịdị elu (h) = 10 – 2 = 8 m

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

A chọrọ : ike kinetic (KE) na ọsọ (v) na mita 2 n'elu ala.

Ngwọta:

(a) Ike kinetic dị mita 2 n'elu ala

Ike mekanikal mbụ = ike ike ndọda

ME _o = PE = mgh = (2)(10)(8) = 160 Joules

Ike mekanikal ikpeazụ = ike kinetic

ME _t = KE = ½ mv _t ²

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

M _o = M _t

PE = KE

160 = KE

Ike Kinetic (KE) nke dị mita abụọ n'elu ala bụ 160 Joules.

(b) Ọsọ ihe n'elu ala kacha ala

Ụkpụrụ nke nchekwa ike igwe:

Ike mekanikal mbụ (ME _o ) = ike mekanikal ikpeazụ (EM _t )

Ike ike ndọda (PE) = ike kinetic (KE)

160 = ½ mv ²

160 = ½ (2) v ²

160 = v ²

v = √160 = √(16)(10) = 4√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