Nkhani yokhudza mphamvu yokoka ndi mphamvu yokoka
Mukakankhira buku pamwamba pa tebulo mpaka buku litasuntha, dzanja lanu limakhudza bukulo. Momwemonso, mukamangirira chinthu ndi chingwe, kenako n’kuchikoka mpaka chitasuntha, dzanja lanu litakhudza chingwe, chingwecho chimakhudza chinthucho. Pankhaniyi, mphamvu yokankhira, mphamvu yokoka, mphamvu yokakamiza ya chingwe, ndi mphamvu ngati izi zimatchedwa mphamvu zogwira kapena mphamvu zolumikizirana. Mphamvu yokoka ya Dziko lapansi yomwe imakoka chipatso chogwera pamwamba pa dziko lapansi. Kapena, mphamvu yokoka ya dziko lapansi yomwe imakoka mwezi kupita ku mlengalenga wa dziko lapansi imachitika popanda kukhudza pakati pa dziko lapansi ndi chipatso ndi mwezi.
Chifukwa chake, mphamvu yokoka kapena mphamvu ngati izi zimatchedwa mphamvu zosakhudza. Kodi zipatso zingagwe bwanji ndipo mwezi "ungagwe" ku dziko lapansi popanda kukhudza pakati pa dziko lapansi ndi zipatso ndi mwezi? Asayansi, kuphatikizapo Newton , adapeza zovuta kuganiza za mphamvu yosakhudza. Kuti timvetse mosavuta ndikumvetsetsa lingaliro la mphamvu yosakhudza, lingaliro la munda likufotokozedwa.
Malo okoka
Pamene chinthu chokhala ndi kulemera chili mumlengalenga, chinthucho chimapanga mphamvu yokoka. Mphamvu yokoka ya chinthu chokhala ndi kulemera m ikuwonetsedwa mu mawonekedwe a mizere yamunda, monga momwe chithunzi chili pansipa chikusonyezera.
Pamene chinthucho chili kutali ndi pamwamba pa chinthucho, mtunda pakati pa mizere ya mphamvu yokoka umakhala kutali. M'malo mwake, pamene chinthucho chili pafupi ndi pamwamba pake, mtunda pakati pa mizere ya munda ukuyandikira. Pamene chili pafupi, mphamvu yokoka imakhala yaikulu. Pamene mphamvu yokoka imakhala yochepa. Mofananamo, kulemera kwa zinthu kukakhala kwakukulu, mizere yokoka imayandikira kwambiri. Ngati tinthu toyesa tayikidwa pafupi ndi chinthu chomwe chimapanga mphamvu yokoka, tinthu toyesa tidzakhala ndi mphamvu yokoka. Kulunjika kwa mphamvu yokoka pakati pa chinthucho kumapanga mphamvu yokoka.
Pamene chinthucho chili kutali ndi pamwamba pa chinthucho, mtunda pakati pa mizere ya mphamvu yokoka umakhala kutali. M'malo mwake, pamene chinthucho chili pafupi ndi pamwamba pake, mtunda pakati pa mizere ya mphamvu yokoka umayandikira kwambiri. Pamene chinthucho chili pafupi, mphamvu yokoka imakula kwambiri. Pamene chinthucho chili kutali, mphamvu yokoka imachepa. Mofananamo, kulemera kwa chinthucho kumakulirakulira, ndipo mizere yokoka imayandikira kwambiri.
Ngati tinthu toyesa tayikidwa pafupi ndi chinthu chomwe chimapanga mphamvu yokoka, tinthu toyesa tidzapeza mphamvu yokoka. Kulunjika kwa mphamvu yokoka pakati pa chinthucho kumapanga mphamvu yokoka.
Mphamvu ya mphamvu yokoka
Mphamvu ya mphamvu yokoka ya dziko lapansi yomwe chinthu chomwe chili pamwamba pa dziko lapansi chimakumana nayo:
g = mphamvu yokoka
F g = mphamvu yokoka
m B = kulemera kwa dziko lapansi
R B = utali wozungulira dziko lapansi = 6.37 x 10 6 m
h = kutalika kwa zinthu pamwamba pa dziko lapansi
Ngati tikufuna kuwerengera mphamvu yokoka ya pulaneti, kulemera, ndi utali wa dziko lapansi (mB ndi RB) zimalowedwa m'malo ndi unyinji ndi mpata wa mwezi kapena unyinji ndi mpata wa dziko linalake.
Ngati tiyang'ana kayendedwe ka kugwa kwa chinthu pamwamba pa dziko lapansi, ndiye kuti chimaonedwa ngati mphamvu yokoka ya dziko lapansi yomwe imaonedwa ndi chinthucho, yomwe ndi 9.8 m/s 2 . Ngati chinthucho chili pamwamba pa dziko lapansi (zinthu sizigwa momasuka), ndiye kuti g imaonedwa ngati mphamvu yokoka ya dziko lapansi yomwe imaonedwa ndi chinthucho, yomwe ndi 9.8 N/kg.
