Ike nwere ike ime - nsogbu na ngwọta

Ike nwere ike - nsogbu na ngwọta

1. Ike 4900 Joules ji ebuli ihe nwere oke ibu nke kilogram 50 ruo n'ogo h. Kedu ka elu h dị? Ọsọ ọsọ n'ihi ike ndọda (g) = 9.8 ms ^-2.

A maara:

Mgbanwe nke ike nwere ike (ΔPE) = 4900 Joules

Ibu ihe (m) = 50 kg

Ọsọ ọsọ nke ike ndọda (g) = 9.8 m/s ²

Achọrọ: elu (Δh)

Ngwọta:

ΔPE = mg Δh

4900 = (50)(9.8) Δh

4900 = 490 Δh

Δh = mita 10

Ike ike oge opupu ihe ubi

2. Grafụ dị n'okpuru na-egosi mmekọrịta dị n'etiti ike (F) na x (mgbanwe n'ogologo) nke oge opupu ihe ubi. Ọ bụrụ na mgbanwe n'ogologo oge opupu ihe ubi bụ 8 cm, kedu ike ikike oge opupu ihe ubi?

A maara:

Ike (F) = 2 Newton Nsogbu na ngwọta ike nwere ike 1

Mgbanwe n'ogologo 1 (x) = 1 cm = 1/100 m = 0.01 m

Mgbanwe n'ogologo 2 = 8 cm = 8/100 m = 0.08 m

Achọsiri ike: Ike nke oge opupu ihe ubi

Ngwọta:

Oge opupu ihe ubi na-adịgide adịgide:

Ike nke oge opupu ihe ubi:

∆PE = 1/2 kx ²

∆PE = 1/2 (200 N/m)(0.08 m) ²

∆PE = (100 N/m)(0.0064 m ² )

∆PE = 0.64 Nm

3. Dabere na tebụl dị n'okpuru, F = ibu nke ihe, ∆L = mgbanwe n'ogologo oge opupu ihe ubi. Gịnị bụ ọrụ a na-arụ na oge opupu ihe ubi, yabụ mgbanwe n'ogologo oge opupu ihe ubi bụ 10 cm.

A maara: Nsogbu na ngwọta ike nwere ike 2

Mgbanwe n'ogologo oge opupu ihe ubi (∆L) = 10 cm = 0.1 m

Achọtara: Arụchara ọrụ n'oge opupu ihe ubi

Ngwọta:

Oge opupu ihe ubi na-adịgide adịgide:

k = F / ∆x = 20 N / 0.04 m = 500 N/m

k = F / ∆x = 30 N / 0.06 m = 500 N/m

k = F / ∆x = 40 N / 0.08 m = 500 N/m

Mmiri na-adịgide adịgide bụ 500 N/m

A na-arụ ọrụ ahụ n'oge opupu ihe ubi, yabụ mgbanwe n'ogologo oge opupu ihe ubi bụ 10 cm:

W = 1/2 k ∆L ² = 1/2 (500 N/m)(0.1 m) ² = (250 N/m)(0.01 m ² ) = 2.5 N m = 2.5 Joules.

4. Eserese dị n'okpuru na-egosi mmekọrịta dị n'etiti ike (F) na mgbanwe n'ogologo (x). Kedu ike ike oge opupu ihe ubi dabere na eserese dị n'okpuru.

A maara: Nsogbu na ngwọta ike nwere ike 4

F = 40 Newton

Δx = 0.08 m

Achọsiri ike: ike nwere ike oge opupu ihe ubi

Ngwọta:

Oge opupu ihe ubi na-adịgide adịgide:

k = F / Δx

Ike nke oge opupu ihe ubi:

PE = ½ k Δx ² = ½ (F/Δx) Δx ² = ½ F Δx

PE = ½ (40) (0.08) = (20) (0.08) = 1.6 Joules

Kedu ihe bụ ike nwere ike ime?
- AzịzaIke nwere ike ịbụ ike ihe nwere n'ihi ọnọdụ ya ma ọ bụ ọnọdụ ya. Ọ bụ ike nwere ike ịrụ ọrụ mana ọ naghị akpata mmegharị ugbu a.
Kedu ka ike ike ndọda si adabere n'ịdị elu?
- AzịzaIke ike ndọda dabere kpọmkwem na ịdị elu nke ihe dị n'elu ebe ntụaka. Usoro a bụ PE $= m g h$ ebe PE bụ ike nwere ike ime, $m$ bụ oke, $g$ bụ ọsọ ndọda, na $h$ bụ elu.
Gịnị mere e ji kwuo na mmiri gbatịrị agbatị ma ọ bụ nke a kpọchiri akpọchi nwere ike ime?
- Azịza: Mgbe e si n'ọnọdụ nhazi ya gbatịa ma ọ bụ kpachie isi iyi, ọ na-echekwa ike. Ike a nwere ike ịrụ ọrụ mgbe oge opupu ahụ laghachiri n'ọnọdụ nhazi ya. A na-akpọ ike echekwara a ike elastic potential ike.
Kedu ka ike ihe nwere ike ịgbanwe ma ọ bụrụ na ebuli ya elu okpukpu abụọ nke ịdị elu mbụ ya n'ọhịa ndọda?
- Azịza: Ọ bụrụ na e bulie ihe elu ruo okpukpu abụọ nke ịdị elu mbụ ya, ike ike ndọda ya na-amụba okpukpu abụọ. Nke a bụ n'ihi na ike ike ahụ dabere n'ogologo.
Ò nwere ike inwe ike na-adịghị mma? Kọwaa.
- Azịza: Ee, ike nwere ike ịbụ ihe na-adịghị mma dabere na nhọrọ nke ebe ntụaka. Dịka ọmụmaatụ, n'ihe gbasara nsogbu ike ndọda, anyị na-emekarị ka ala bụrụ ihe na-enweghị ike. Ọ bụrụ na ihe dị n'okpuru ebe ntụaka a (dị ka n'olulu mmiri), ike nwere ike ya ga-abụ ihe na-adịghị mma ma e jiri ya tụnyere ebe ntụaka ahọpụtara.
Kedu ka ike nwere ike si ejikọta ya na ike kinetic n'ime sistemu mechiri emechi?
- Azịza: N'ime sistemụ mechiri emechi na-enweghị ike mpụga, ike zuru oke (ike kinetic + potential) na-adịgide adịgide. Ụkpụrụ a dabere na nchekwa nke ike. Ka ike nwere ike na-abawanye, ike kinetic na-ebelata, na nke ọzọ.
Gịnị na-eme ike ndọda nke apụl mgbe ọ dara site n'osisi?
- Azịza: Ka apụl na-ada, ike ndọda ya na-ebelata n'ihi na ọ na-abịaru ụwa nso. Ike a furu efu na-agbanwe ka ọ bụrụ ike kinetic, na-eme ka apụl na-aga ngwa ngwa ka ọ na-ada.
Gịnị mere pendulum ji enwe ike kachasị elu n'oge ọ na-efegharị?
- Azịza: N'oge ọ na-agbagharị, pendulum dị n'ebe kachasị elu ma e jiri ya tụnyere ebe ọ na-ezu ike. Nke a pụtara na o nwere oke elu ya, ya mere, ike ndọda kachasị elu. Ka ọ na-agbada, ike a na-agbanwe ka ọ bụrụ ike kinetic.
Ihe ọ bụla nwere ike inwe ike ọ bụla ọbụlagodi na ọ nọghị n'ọhịa ndọda?
- Azịza: Ee. Ike nwere ike abụghị naanị maka ubi ndọda. Dịka ọmụmaatụ, isi iyi akpọchiri akpọchi n'ọdụ mbara igwe (ebe mmetụta ndọda dị obere) ka nwere ike ịkpụgharị. N'otu aka ahụ, chajị dị n'ọhịa eletriki nwere ike ọkụ eletrik.
Kedu ka oke ihe si emetụta ike ndọda ya?
- AzịzaIke ike ndọda na-adabara kpọmkwem na oke ihe. Ọ bụrụ na ị jiri okpukpu abụọ nke oke ihe, ike ike ndọda ya (n'otu elu) ga-amụbakwa okpukpu abụọ.