g vs G
G yog lub cim siv los txheeb xyuas lub ntiaj teb gravitational tas li, g yog lub cim siv los qhia txog lub gravitational acceleration. Ob lub tswv yim no yog qhov tseem ceeb heev nyob rau hauv lub ntiajteb txawj nqus. Hauv kev kawm ntawm gravitational teb, ob lub ntsiab lus thiab cov cim no tau siv dav. Nws yog ib qho tseem ceeb kom muaj kev nkag siab zoo hauv lub gravitational acceleration thiab universal gravitational tas li kom ua tau zoo hauv cov haujlwm xws li physics, classical mechanics, cosmology, astrophysics thiab txawm tias qhov chaw tshawb nrhiav. Hauv tsab xov xwm no, peb yuav tham txog dab tsi gravitational acceleration thiab universal gravitational tas li yog, lawv cov ntsiab lus, qhov tseem ceeb, thiab qhov ntev, lawv daim ntawv thov, qhov zoo sib xws ntawm universal gravitational tas li thiab lub gravitational acceleration, thiab thaum kawg qhov txawv ntawm universal gravitational tas li thiab cov gravitational acceleration.
g (Gravitational Acceleration)
Lub ntiajteb txawj nqus yog ntau lub npe siv rau lub tswvyim ntawm lub ntiajteb txawj nqus. Gravitational teb yog lub tswvyim ntawm vector teb. Lub gravitational teb yog nyob rau hauv lub radial sab nraud kev taw qhia los ntawm lub loj. Nws yog ntsuas raws li GM / r 2 G yog universal gravitational tas li uas muaj tus nqi ntawm 6.674 x 10-11 Newton meter squared ib kilogram squared. Qhov no gravitational kev siv zog no kuj hu ua gravitational acceleration. Lub gravitational acceleration yog qhov acceleration ntawm txhua qhov loj vim qhov gravitational teb. Lub sij hawm gravitational muaj peev xwm kuj yog ib feem ntawm lub ntsiab lus rau lub gravitational teb. Lub peev xwm gravitational txhais tau tias yog qhov kev ua haujlwm uas yuav tsum tau coj mus kuaj qhov hnyav ntawm ib kilogram ntawm infinity mus rau qhov muab. Lub peev xwm gravitational yeej ib txwm tsis zoo los yog xoom, txij li tsuas yog gravitational attractions muaj nyob, thiab kev ua hauj lwm yuav tsum tau ua ntawm ib yam khoom coj nws los ze zog rau qhov loj, thiab ib txwm tsis zoo. Gravitational field siv sib txawv nyob rau hauv ib qho kev sib hloov square kev sib raug zoo nrog qhov kev ncua deb ntawm qhov loj.
G (Universal Gravitational Constant)
Ib qhov tas li thoob ntiaj teb yog qhov tas li, uas tsis muaj sijhawm, qhov chaw, nrawm, nrawm, lossis lwm yam tsis muaj. Ib tug universal tas li tsuas muaj ib tug nqi nyob rau hauv ib chav tsev system. Tus nqi yuav txawv nyob rau hauv txawv unit systems tab sis hloov dua siab tshiab ntawm txhua tus nqi yuav tsum yields tib lo lus teb. Tus nqi ntawm universal gravitational tas li nyob rau hauv SI units yog 6.674 x 10 -11 thiab cov units yog Newton meter squared ib kilogram squared. Qhov ntev ntawm lub universal gravitational tas li tuaj yeem sau ua [L] 3[T]-2[M]. Ntau yam xws li kev sib nrig sib nqus sib nqus, qhov sib nqus nrawm nrawm, qhov sib nqus qhov sib nqus thiab tag nrho lwm cov khoom muaj feem cuam tshuam yog nyob ntawm qhov universal gravitational tas li.
g qhov sib txawv ntawm g yog dab tsi?
• G stands rau universal gravitational tas li, whereas g stands rau lub gravitational acceleration ntawm ib tug tej yam taw tes.
• G yog qhov tas mus li thoob plaws qhov chaw thiab lub sijhawm, tab sis g yog qhov sib txawv.
• Gravitational acceleration nyob ntawm lub universal gravitational tas li, tab sis lub universal gravitational tas li yog ywj siab ntawm lub gravitational acceleration.
• Cov units ntawm g yog ms-2, hos cov units ntawm G yog m3s -2kg-1
