Kalembedwe ka Conservative ndi kalembedwe kosakhala ka Conservative

1. Kalembedwe kachikhalidwe
Ngati ntchito yochitidwa ndi mphamvu pamene chinthu chayamba kuyenda kuchokera pamalo ake oyamba mpaka chinthucho chibwerere pamalo ake oyamba ndi yofanana ndi zero, ndiye kuti mphamvuyo imatchedwa mphamvu yosunga zinthu.
Nazi zitsanzo za masitaelo okhwima.

1.1. Mphamvu yokoka
Taganizirani chinthu chomwe chikukwera molunjika mpaka kufika pamlingo wapamwamba kwambiri kenako n’kutsika kupita pamalo ake oyambirira. Pamene chikukwera molunjika mtunda wa h, mphamvu yokoka imakhala yosiyana ndi kusamuka kwa chinthucho. Chifukwa chakuti chili mosiyana ndi kusamuka kwa chinthucho, mphamvu yokoka imagwira ntchito yoipa pa chinthucho.
W = wh cos (180^o) = – wh = – mgh
Chikafika kutalika kwake kwakukulu, chinthucho chimapita pansi kupita pamalo ake oyambirira ndi mtunda wa h. Chikayenda pansi, mphamvu yokoka imakhala mbali imodzi ndi kusamuka kwa chinthucho. Chifukwa chakuti chili mbali imodzi ndi kusamuka, mphamvu yokoka imagwira ntchito bwino.
W = wh cos (0^o) = – wh = – mgh
Kulemera kwa chinthu (m), mphamvu yokoka (g) ndi kutalika (h) ndi chimodzimodzi, motero ntchito yomwe imachitika ndi mphamvu yokoka pamene chinthucho chikuyamba kuyenda molunjika mmwamba mpaka chibwerere pamalo ake oyambirira ndi yofanana ndi zero.
W = mgh – mgh
W=0

1.2. Mphamvu ya masika
Taganizirani kasupe woyikidwa mopingasa. Ngati mbali yakumanja ya kasupe ikankhidwira kapena kukanikiza kumanzere, kasupeyo imagwiritsanso ntchito mphamvu kumanja. Mutha kutsimikizira izi mwa kukanikiza kasupeyo. Mwachitsanzo, ikani chinthu kumapeto kwa kumanja kwa kasupeyo kenako n’kuchikanikiza kumanzere. Kasupeyo akatembenuka, chotsani dzanja lanu pa kulemera ndi kasupeyo. Dzanja lanu likasakhudzanso kasupeyo, chinthucho chikukankhira kulemera kumanja. Chinthucho chikasuntha kumanzere, njira yoyendetsera chinthucho imakhala yosiyana ndi njira ya mphamvu ya kasupeyo. Chifukwa mphamvuyo ili mbali zosiyana, mphamvu ya kasupeyo imagwira ntchito yoyipa.
W = – ½ kx²
Chinthu chikasuntha kupita kumanja, komwe katunduyo akupita kapena komwe katunduyo akupita kumakhala kofanana ndi komwe mphamvu ya kasupe ikupita. Chifukwa chakuti ali mbali imodzi, mphamvu ya kasupe imagwira ntchito yabwino.
W = ½ kx²
Masipu agwiritsidwa ntchito ndi ofanana, kotero kasinthasintha ka masika (k) ndi komweko. Kusuntha kwa masika nakonso ndi komweko. Chifukwa chake, ntchito yochitidwa ndi mphamvu yokoka pamene chinthucho chikuyamba kusuntha kumanzere mtunda wa x kenako nkubwerera kumanja mtunda wa x ndi wofanana ndi zero.
W = ½ kx² – ½ kx²
Ntchito yochitidwa ndi mphamvu yokoka ndi mphamvu ya masika panthawi yosuntha chinthu kuchokera pamalo ake oyamba mpaka chibwerere pamalo ake oyamba ndi zero. Ngati ntchito yochitidwa ndi mphamvu pamene chinthu chikuyamba kuyenda kuchokera pamalo ake oyamba mpaka chibwerere pamalo ake oyamba ndi zero, ndiye kuti mphamvuyo imatchedwa mphamvu yosunga zinthu.

2.      Kalembedwe kosakhala kosunga mwambo

Ngati ntchito yochitidwa ndi mphamvu pamene chinthu chikuyamba kuyenda kuchokera pamalo ake oyamba mpaka chibwerere pamalo ake oyambirira si yofanana ndi zero, ndiye kuti mphamvuyo imatchedwa mphamvu yosasintha.
Nazi zitsanzo zina za mitundu ya zilembo zodziwika bwino.
2.1 Mphamvu yokakamiza ndi mphamvu yokakamiza
Taganizirani chinthu chomwe chimakankhira kumanja kenako n’kukankhiranso kumanzere. Chikasuntha kapena kusuntha kupita kumanja, njira yosunthira chinthucho imakhala yofanana ndi njira ya mphamvu yokankhira (F) ndipo imasiyana ndi njira ya mphamvu yokankhira (f)._k). Popeza ili mbali imodzi ndi kusuntha, mphamvu yokankhira imagwira ntchito yabwino pa chinthucho.
W = F s

Kumbali inayi, kugwedezeka kwa kinetic kumagwira ntchito yoyipa pa chinthu.
W = – f_k s
Chinthu chikasuntha kapena kusunthira kumanzere, njira yosunthira chinthucho imakhala yofanana ndi njira yoyendetsera mphamvu yokankhira ndipo imasiyana ndi njira yoyendetsera mphamvu yokankhira. Chifukwa chakuti ili mbali imodzi ndi njira yoyendetsera, mphamvu yokankhira imagwira ntchito yabwino pa chinthucho.
W = F s
Kumbali inayi, kugwedezeka kwa kinetic kumagwira ntchito yoyipa pa chinthu.
W = – f_k s
Ntchito yomwe imachitidwa ndi mphamvu yokankhira ndi mphamvu yokankhira pa chinthu pamene chinthucho chikuyamba kuyenda kuchokera pamalo ake oyamba mpaka chibwerere pamalo ake oyamba ndi W = 2 F s ndi W = -2 f_k s
Ntchito yochitidwa ndi mphamvu yokankhira ndi mphamvu yokankhira pamene chinthucho chikuyamba kuyenda kuchokera pamalo ake oyamba mpaka chinthucho chibwerere pamalo ake oyamba si yofanana ndi zero.
Ngati ntchito yochitidwa ndi mphamvu pamene chinthu chikuyamba kuyenda kuchokera pamalo ake oyamba mpaka chibwerere pamalo ake oyambirira si yofanana ndi zero, ndiye kuti mphamvuyo imatchedwa mphamvu yosasintha.

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