Chitsanzo cha kugwiritsa ntchito malamulo a Newton pamalo osalala (opanda kukangana)

Zitsanzo ziwiri za kugwiritsa ntchito malamulo a Newton panjira yosalala (yopanda kukangana)

1. Kulemera kwa chipikacho ndi 2 kg, kuthamanga chifukwa cha mphamvu yokoka = 10 m/s²Dziwani (a) mphamvu yochokera yomwe imafulumizitsa chipikacho (b) kukula kwa kuthamanga kwa chipikacho.
Zokambirana
Ndizodziwika kuti :
Kulemera kwa chipika (m) = 2 kg
Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s²
Kulemera kwa chipika (w) = mg = (2)(10) = 20 Newton
w_x = w sin 30 = (20)(0,5) = 10 Newtons
w_y = w cos 30 = (20)(0,5√3) = 10√3 Ma Newton
Yankho:
(a) mphamvu yochokera pamenepo yomwe imafulumizitsa chipikacho
Malo otsetsereka bwino pomwe kusagwirizana kumawoneka kuti kulibe. Chifukwa chake mphamvu yomwe imakhudza kuyenda kwa chipikacho ndi w yokha_x
(b) kuthamanga kwakukulu kwa block
Kukula kwa kuthamanga kwa chipikacho ndi 5 m/s², komwe kuthamanga kwa block kumapita pansi.

2. Chipikacho chili pamalo osalala, osagwedezeka. Kulemera kwa chipikacho ndi 3 kg, ndipo kuthamanga chifukwa cha mphamvu yokoka ndi 10 m/s.²Dziwani kukula kwa mphamvu F ngati (a) chipikacho chikadali (b) chipikacho chikuyenda pansi ndi kuthamanga kwa 2 m/s² (c) chipikacho chimapita mmwamba ndi kuthamanga kosalekeza kwa 2 m/s².
Zokambirana
Ndizodziwika kuti :
Kulemera kwa chipika (m) = 3 kg
Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s²
Kulemera kwa chipika (w) = mg = (3)(10) = 30 Newton
w_x = w sin 30 = (30)(0,5) = 15 Newtons
w_y = w cos 30 = (30)(0,5√3) = 15√3Newtons
Yankho:
(a) Dziwani F ngati chipikacho chili pamalo opumulira.
Lamulo loyamba la Newton limati chinthu chimakhala chili pampando ngati mphamvu yochokerapo ili zero.
(b) Dziwani F ngati chipikacho chikutsika pansi ndi kuthamanga kwa 2 m/s²
(c) Dziwani F ngati chipikacho chikukwera mmwamba ndi kuthamanga kosalekeza kwa 2 m/s²

[Chingerezi: Kuyenda pa ndege yopendekeka popanda mphamvu yokangana]