Lamulo Lachitatu la Newton amanena kuti ngati chinthu 1 chikugwiritsa ntchito mphamvu pa chinthu 2, nthawi yomweyo chinthu 2 chikugwiritsa ntchito mphamvu pa chinthu 1. Kukula kwa mphamvu ziwirizi ndi komweko koma komwe mphamvu ziwirizi zikupita ndi kosiyana. Mphamvu imodzi imatchedwa kuchitapo kanthu, inayo imatchedwa kuchitapo kanthu.
Chizindikiro chotsutsa chimasonyeza komwe mphamvu ikupita. F action ndi yabwino, pomwe F reaction ndi yoipa. Izi zikusonyeza kuti zochita ndi mphamvu zochitira zinthu zili mbali zosiyana.
Lamulo Lachiwiri la Newton
Lamulo Lachiwiri la Newton amanena kuti ngati mphamvu yochokera pa chinthu siili zero, chinthucho chidzathamanga. Kukula kwa kuthamanga kumafanana ndi kukula kwa mphamvu yonse ndipo motsutsana ndi kulemera kwa chinthucho. Kulunjika kwa kuthamanga ndi kofanana ndi komwe mphamvu yonse imapita.
Lamulo Loyamba la Newton
Lamulo Loyamba la Newton amanena kuti chinthu chilichonse chomwe chili pa mpumulo chidzakhalabe pa mpumulo kapena ... kapena pa mpumulo ... Octobermayendedwe ofanana a mzere idzapitiriza kuyenda molunjika pa liwiro losasintha ngati mphamvu yonse, yomwe imadziwikanso kuti mphamvu yochokera pa chinthucho, ili yofanana ndi zero. Chiganizo cha masamu cha lamulo loyamba la Newton:
Taganizirani chinthu chomwe chikukuzungulirani, monga tebulo, mwala, kapena china chilichonse. Tebulo lomwe lili pamalo opumulira limakhalabe pamalo opumulira pokhapokha ngati lasunthidwa kapena kugonjetsedwa ndi mphamvu yakunja, monga kukankhira kapena kukoka. Izi ndi zomwezo ndi zinthu zina zomwe zili pamalo opumulira.
Zitsanzo za mafunso okhudza lamulo lachiwiri la Newton
Zitsanzo 8 za Lamulo Lachiwiri la Newton la Kusuntha
1. Chinthu cholemera makilogalamu 1 chimayenda ndi liwiro losalekeza la 5 m/s2Kodi mphamvu yochokera pamenepo yomwe imasuntha chinthucho ndi yaikulu bwanji?
Zokambirana
Ndizodziwika kuti :
Kulemera kwa chinthu (m) = 1 kg
Kuthamanga (a) = 5 m/s2
Anafunsa : mphamvu yochokerapo yomwe imasuntha chinthu
Chitsanzo cha mafunso a mphamvu wamba
Zitsanzo 9 za Mafunso Abwinobwino a Mphamvu
1. Chipika chili pamalo opumira. Kulemera kwa chipikacho (m) = 1 kg, kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s2Kukula ndi malangizo a mphamvu yachibadwa (N) ndi...
Zokambirana
Amadziwika kuti :
Chitsanzo cha mafunso okhudza mphamvu yokangana
Zitsanzo 6 za Mafunso Okhudza Mphamvu Yotsutsana
1. Chipika cholemera makilogalamu 1 chimakhala pamalo osalala. Chiŵerengero cha kukangana kosasinthasintha ndi 0,4 ndipo kuthamanga chifukwa cha mphamvu yokoka ndi 10 m/s.2Dziwani (a) kukula kwa mphamvu yosasunthika (b) mphamvu yocheperako yokakamiza F kuti chipikacho chiyambe kuyenda!
Zokambirana
Ndizodziwika kuti :
Chitsanzo cha mafunso okhudza mphamvu yokoka
Zitsanzo zitatu za mafunso okhudza mphamvu yokoka
1. Chinthu chili ndi kulemera kwa 1 kg. Ngati kuthamanga chifukwa cha mphamvu yokoka = 10 m/s2, kodi chinthucho chimalemera zingati?
Zokambirana
Ndizodziwika kuti :
Kulemera kwa chinthu (m) = 1 kg
Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s2
Anafunsa Kulemera kwa chinthu (w)
Yankhani :
Zitsanzo za mafunso okhudza kufulumira kwa angular ndi kufulumira kwa tangential
Zitsanzo 4 za mafunso okhudza kuthamanga kwa angular ndi kuthamanga kwa tangential
1. Gudumu lokhala ndi utali wa masentimita 30 limazungulira ndi liwiro lokhazikika la 5 rad/s2Kodi kuthamanga kwa tangential kwa mfundo yomwe ili (a) 10 cm kuchokera pa ekseli (b) 20 cm kuchokera pa ekseli (c) m'mphepete mwa gudumu ndi kwakukulu bwanji?
Zokambirana
Mafunso a Chitsanzo cha Kuthamanga kwa Pakati pa Pakati
Zitsanzo 7 za mafunso okhudza kuthamanga kwa centripetal
1. Mwala umamangiriridwa ku chingwe kenako n’kuzunguliridwa mopingasa mpaka mwalawo utazungulira ngodya ya 360°.o Sekondi imodzi iliyonse. Ngati kutalika kwa chingwe ndi masentimita 20, dziwani kukula kwa kuthamanga kwa chinthucho pakati!
Zokambirana
Ndizodziwika kuti :
Liwiro la angular (ω) = 360o/sekondi = kuzungulira 1 / sekondi = ma radians 6,28/sekondi
Kutalika kwa chingwe = utali wa njira yozungulira (r) = 20 cm = 0,2 mamita
Anafunsa : kuthamanga kwapakati (as)
Zitsanzo za mafunso okhudza liwiro la angular ndi liwiro la tangential
Zitsanzo 5 za mafunso okhudza liwiro la angular ndi liwiro la tangential
1. Mpira umamangiriridwa ku chingwe cha mamita awiri kenako n’kuzunguliridwa mozungulira mpaka mpirawo ukuyenda ndi liwiro lokhazikika la ma radian 10/sekondi. Dziwani kukula kwa liwiro la tangential la mfundo yomwe ndi (a) mamita 0,5 kuchokera ku mzere (b) mita imodzi kuchokera ku mzere (c) m’mphepete mwa gudumu.
Zokambirana
Ndizodziwika kuti :
Kutalika kwa chingwe = utali wa njira yozungulira (r) = mamita awiri
Liwiro la angular = ma radians 10/sekondi
Anafunsa : liwiro la tangential la mfundo pa (a) r = 0,5 mamita (b) r = 1 mita (c) r = 2 mamita
Yankhani :