1. Kulemera (w)
Mphamvu yokoka, kapena nthawi zambiri imafupikitsidwa ngati kulemera, ndi mphamvu yokoka yomwe imagwira ntchito pa chinthu chokhala ndi kulemera. Chizindikiro cha mphamvu yokoka ndi w, chomwe chimayimira kulemera.
Fomula yowerengera mphamvu yokoka imachokera ku fomula Lamulo lachiwiri la Newton :
F = ma
Kugwiritsa ntchito powerengera mphamvu yokoka:
w = mg
Keterangan :
F = mphamvu (gawo lapadziko lonse lapansi = Newton)
w = mphamvu yokoka (gawo lapadziko lonse lapansi = Newton)
m = kulemera kwa chinthu (mayunitsi apadziko lonse lapansi = kg)
ku = kufulumizitsa (gawo lapadziko lonse lapansi = m/s2)
g = kuthamanga chifukwa cha mphamvu yokoka (mayunitsi apadziko lonse lapansi = m/s2)
2. Mphamvu Yabwinobwino
Mphamvu yachibadwa ndi mphamvu yomwe imagwira ntchito pa zinthu ziwiri zomwe zikugwirizana, komwe komwe mphamvu yachibadwa imayang'ana imakhala yolunjika pamwamba pa malo olumikizirana.
Yang'anani chinthu chomwe chili pamalo osaima pamwamba pa tebulo. Kulemera kapena mphamvu yokoka imagwiranso ntchito pa chinthucho. Zinthu sizigwa momasuka ngati zipatso zomwe zimagwa kuchokera mumtengo chifukwa pali mphamvu yachibadwa yomwe imalinganiza mphamvu ya mphamvu yokoka. Mphamvu yokoka ndi mphamvu yachibadwa zimakhala ndi kukula kofanana koma zosiyana kotero kuti mphamvu yotsatira yomwe imagwira ntchito pa chinthucho ndi zero.
