Ojiji nke nchekwa ike igwe maka mmegharị ihe mberede - nsogbu na ngwọta

1. Bọọlụ a gbara ụkwụ na-apụ n'ala n'akụkụ θ = 30 ^o na ọsọ mbụ nke 10 m/s. Oke bọọlụ = 0.1 kg. Ọsọ ọsọ nke ike ndọda bụ 1 0 m/s ^2. Chọpụta (a) Ike ike ndọda n'ebe kachasị elu (b) Isi kachasị elu ma ọ bụ elu kachasị elu

A maara:

Ibu (m) = 0.1 kg

Ọsọ mbụ (v _o ) = 10 m/s

Nkuku = 30 ^o

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Ngwọta:

(a) Ike ike ndọda

Gbakọọ ihe mejupụtara kwụ ọtọ (v _ox ) na ihe mejupụtara kwụ ọtọ (v _oy ) nke ọsọ mbụ.

v_ox = v_o cos θ = (10)(kọs 30)^o) = (10)(0.5√3) = 5√3 m/s

v _oy = v _o mmehie θ = (10) (mmehie 30 ^o ) = (10) ( 0.5) = 5 m/s

Ike igwe mbụ

Ike mekanikal mbụ (ME _o ) = ike kinetic (KE)

ME _o = KE = ½ mv _o ² = ½ (0.1) (10) ² = ½ (0.1) (100) = ½ (10) = 5 Joules

Ike mekanikal ikpeazụ

Ike kinetic n'ebe kachasị elu:

KE = ½ mv _ehi ² = ½ (0.1) (5√3) ² = ½ (0.1) ((25) (3)) = ½ (0.1) (75) = 3.75 Joules

Ụkpụrụ nke nchekwa ike igwe

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

KE = PE + KE

5 = EP + 3.75

PE = 5 – 3.75 = 1.25 Joule

Ike ike ndọda n'ebe kachasị elu bụ 1.25 joules.

(b) Isi kachasị elu ma ọ bụ elu kachasị elu

PE = mgh

1.25 = (0.1)(10) awa

1.25 = awa

Ogologo kachasị elu bụ mita ise.

[irp]

2. A na-atụpụta bọọlụ 0.1-kg n'usoro site na ọsọ mbụ v _o = 10 m/s site na ụlọ dị mita 10 n'ịdị elu. Ọsọ ọsọ nke ike ndọda bụ 10 m/s ^2. Chọpụta ike kinetic nke bọọlụ ahụ mgbe ọ dara n'ala.

A maara:

Ibu (m) = 0.1 kg

Ọsọ mbụ (v _o ) = 10 m/s

Ọsọ ọsọ nke ike ndọda (g) = 10 m/s ²

Mgbanwe n'ịdị elu (h) = 10 – 2 = 8 m

Achọrọ: ike kinetic na mita 2 n'elu ala

Ngwọta:

Ike ike ndọda (PE) = mgh = (0.1)(10)(10) = 10 Joules

Ike kinetic mbụ (KE)= ½ mv _o ² = ½ (0.1)(10) ² = ½ (0.1)(100) = ½ (10) = 5 Joules

Ike kinetic ikpeazụ = ike ike ndọda mbụ + ike kinetic mbụ = 10 + 5 = 15 Joules

[wpdm_package id='1173′]

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