Qhov sib txawv tseem ceeb ntawm lub zog buoyant thiab lub zog gravitational yog lub zog gravitational yog lub zog uas rub cov khoom thaum lub zog buoyant yog lub zog nce siab uas ua rau cov khoom ntab hauv cov kua.
Lub zog quab yuam thiab lub zog buoyant yog ob lub zog tseem ceeb hauv qhov xwm txheej, uas pab cov statics thiab dynamics ntawm lub cev. Cov rog no ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm xws li kev tsim hluav taws xob nautical, astronomy, physics thiab ntau ntxiv. Nws yog ib qho tseem ceeb kom muaj kev nkag siab meej ntawm ob qho tib si gravitational force thiab buoyant force thiaj li ua tau zoo hauv cov haujlwm no. Hauv tsab xov xwm no, peb yuav tham txog dab tsi gravitational force thiab buoyant force yog, lawv cov ntsiab lus, qhov zoo sib xws ntawm ob lub zog, kev siv ntawm ob qho no, nrog rau qhov sib txawv ntawm lub zog gravitational thiab buoyant force.
Dab tsi yog Lub Zog Muaj Zog?
Kev sib tw yog lub zog nce siab los ntawm cov kua dej ntawm ib qho khoom. Lub siab ntawm cov kua dej zoo li qub tsuas yog nyob ntawm qhov tob ntawm qhov taw tes uas ntsuas qhov siab, qhov gravitational acceleration, thiab qhov ntom ntawm cov kua. Kho ob qho tib si raws li qhov tsis tu ncua lub siab tsuas yog nyob ntawm qhov tob. Deeper lub ntsiab lus, siab dua yuav. Qhov no yog linear proportionality. Qhov no txhais tau tias txhua yam khoom tso rau hauv cov kua dej yuav hnov qhov txawv ntawm qhov siab ntawm sab saum toj thiab hauv qab. Lub siab hauv qab, uas siab tshaj qhov siab tshaj plaws, yuav sim thawb cov khoom mus rau pem hauv ntej. Qhov no yog lub npe hu ua buoyant force.
Vim lub zog buoyant sib npaug lossis siab dua qhov hnyav ntawm qhov khoom, nws yuav tsis poob. Yog tias qhov hnyav ntawm qhov khoom siab tshaj qhov quab yuam buoyant, nws yuav poob. Txawm hais tias lub siab sib txawv nrog qhov siab, qhov sib txawv ntawm qhov siab rau qhov sib txawv qhov siab yuav zoo ib yam thoob plaws hauv cov kua. Qhov no txhais tau hais tias lub zog buoyant tsis hloov raws li qhov chaw ntawm cov khoom hauv cov kua.
Dab tsi yog Gravitational Force?
Sir Isaac Newton yog thawj tus neeg tsim lub ntiajteb txawj nqus. Tab sis ua ntej nws, Johannes Kepler thiab Galileo Galilei tau tso lub hauv paus rau nws los tsim lub tswv yim ntawm lub ntiajteb txawj nqus. Qhov sib npaug nto moo F=G M1 M2 / r2 muab lub zog ntawm lub zog gravitational, qhov twg M1 thiab M2 yog cov khoom taw tes thiab r yog qhov txav ntawm ob yam khoom.
Daim duab 01: Lub Zog Loj thiab Lub Zog Loj
Rau cov ntawv thov hauv lub neej tiag tiag, lawv tuaj yeem yog cov khoom qub ntawm txhua qhov ntev thiab r yog qhov kev hloov pauv ntawm qhov chaw ntawm lub ntiajteb txawj nqus. Lub zog gravitational yog suav tias yog ib qho kev ua ntawm qhov deb. Qhov no ua rau muaj teeb meem ntawm lub sijhawm sib txawv ntawm kev sib cuam tshuam. Qhov no tuaj yeem raug tshem tawm siv lub tswv yim gravitational teb. Gravitational quab yuam tsuas yog nyiam cov khoom. Repulsion nyob rau hauv gravitational teb yog tsis tam sim no. Lub zog gravitational los ntawm lub ntiaj teb ntawm ib yam khoom tseem hu ua qhov hnyav ntawm cov khoom hauv ntiaj teb. Lub ntiajteb txawj nqus yog kev sib nrig sib zog. Lub zog ntawm cov khoom A ntawm cov khoom B yog tib yam li lub zog ntawm cov khoom B ntawm cov khoom A.
Qhov txawv ntawm Buoyant Force thiab Gravitational Force yog dab tsi?
Lub zog nqus yog lub zog uas rub cov khoom thaum lub zog buoyant yog lub zog nce siab uas ua rau cov khoom ntab hauv cov kua. Qhov no yog qhov sib txawv tseem ceeb ntawm lub zog buoyant thiab lub zog gravitational. Ntxiv mus, gravitational rog ua nyob rau hauv ib qho nruab nrab thaum lub zog buoyant tsuas muaj nyob rau hauv cov kua. Tsis tas li ntawd, buoyant rog koom nrog repulsion ntawm cov khoom thiab cov kua dej thaum lub zog gravitational koom nrog attraction.
Summary – Buoyant Force vs Gravitational Force
Qhov sib txawv tseem ceeb ntawm lub zog buoyant thiab lub zog gravitational yog lub zog gravitational yog lub zog uas rub cov khoom thaum lub zog buoyant yog lub zog nce siab uas ua rau cov khoom ntab hauv cov kua.
Image Courtesy:
1. "Buoyancy" Los ntawm Luis Mavier Rodriguez Lopez - ua tiav rau Wikipedia, tej zaum yuav pom ntawm kuv lub vev xaib yav tom ntej: (CC BY 2.5) ntawm Commons Wikimedia
