Acceleration vs Gravitational Field
Acceleration thiab gravitational field yog ob lub tswv yim sib tham nyob rau hauv mechanics hauv physics. Ob lub tswv yim no tseem ceeb sib npaug thaum nws los txog rau kev nkag siab ntawm cov tshuab ntawm qhov xwm txheej. Nws yog ib qho tseem ceeb kom muaj kev nkag siab zoo txog acceleration thiab gravitational teb ntawm astronomy, physics, engineering thiab foob pob ua ntxaij science. Rau qee tus neeg ob lub ntsiab lus no yuav zoo ib yam zoo ib yam, rau lwm tus ob qhov no yuav zoo li tsis muaj qhov chaw. Hauv tsab xov xwm no, peb yuav tau txais kev nkag siab zoo txog dab tsi yog qhov gravitational field thiab acceleration, lawv cov ntsiab lus, zoo sib xws thiab thaum kawg lawv qhov sib txawv.
Acceleration
Acceleration txhais tau tias yog tus nqi hloov pauv ntawm lub cev. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias acceleration ib txwm yuav tsum muaj lub zog ua haujlwm ntawm qhov khoom. Qhov no tau piav qhia hauv Newton txoj cai thib ob ntawm kev txav chaw. Qhov thib ob txoj cai lij choj hais tias lub net quab yuam F ntawm lub cev yog sib npaug rau tus nqi ntawm kev hloov ntawm linear momentum ntawm lub cev. Txij li thaum lub zog linear yog muab los ntawm cov khoom ntawm huab hwm coj thiab tshaj tawm ntawm lub cev, thiab qhov loj tsis hloov ntawm qhov tsis sib xws, qhov quab yuam yog sib npaug rau huab hwm coj lub sij hawm tus nqi hloov ntawm kev tshaj tawm, uas yog qhov nrawm. Yuav muaj ntau yam ua rau lub zog no. Electromagnetic quab yuam, gravitational force thiab mechanical force yog npe rau ob peb tug. Lub acceleration vim ib tug loj nyob ze yog hu ua lub gravitational acceleration. Nws yuav tsum raug pom tias yog tias ib qho khoom tsis raug rau lub net quab yuam cov khoom yuav tsis hloov qhov nrawm ntawm nws tus kheej, txawm tias nws txav los yog nyob ruaj ruaj. Nco ntsoov tias kev txav ntawm cov khoom tsis tas yuav tsum muaj lub zog, tab sis qhov nrawm ib txwm xav tau lub zog.
Gravitational field
Gravitational teb yog ib lub tswv yim thiab ib txoj hauv kev los xam thiab piav qhia qhov tshwm sim tshwm sim nyob ib ncig ntawm txhua yam khoom nrog ib pawg. Lub gravitational teb yog txhais nyob ib ncig ntawm txhua qhov loj. Raws li Newton txoj cai universal ntawm gravitation, ob pawg M thiab m faib los ntawm ib qho kev ncua deb r exerts ib tug quab yuam F=G M m / r 2ntawm ib leeg. Yog hais tias peb muab cov ntaub ntawv ntawm m=1, peb tau txais ib qho kev sib npaug tshiab, qhov twg F=GM / r 2 Lub gravitational siv ntawm ib tug taw tes nyob rau ntawm ib tug deb r los ntawm qhov loj yog txhais. Raws li lub zog ib chav tsev loj ntawm qhov taw tes r, qhov no feem ntau hu ua g, qhov twg g=GM / r 2 Vim peb paub F=ma, thiab F=GMm / r 2, peb pom tau tias a=GM/r2 Qhov no txhais tau hais tias qhov gravitational field intensity thiab acceleration vim lub gravitational force yog tib yam. Qhov no acceleration yog hu ua lub gravitational acceleration.
Dab tsi yog qhov txawv ntawm Acceleration thiab Gravitational Field?
• Acceleration is a vector, hos gravitational field is a concept siv los piav txog tus cwj pwm ntawm cov huab hwm coj nyob ib ncig ntawm ib pawg.
• Lub gravitational field intensity yog vector, thiab nws yog sib npaug rau gravitational acceleration ntawm qhov point.
• Gravitational acceleration yeej ib txwm rau ntawm qhov khoom, thaum acceleration feem ntau yuav nyob rau hauv txhua txoj kev, tsuav yog lub net force nyob rau hauv tib txoj kev.
