Kev khiav nrawm vs Orbital Velocity
Kev khiav nrawm thiab lub voj voog nrawm yog ob lub tswv yim tseem ceeb koom nrog hauv physics. Cov ntsiab lus no tseem ceeb heev hauv cov haujlwm xws li satellite project thiab atmospheric science. Txoj kev khiav tawm yog vim li cas peb muaj huab cua thiab lub hli tsis muaj. Nws yog ib qho tseem ceeb kom muaj kev nkag siab zoo hauv cov ntsiab lus no txhawm rau ua kom tau zoo hauv cov haujlwm tseem ceeb. Kab lus no yuav sim sib piv cov kev khiav tawm nrog kev tshaj tawm orbital, lawv cov ntsiab lus, kev suav, qhov sib xws thiab qhov sib txawv thaum kawg.
Kev khiav nrawm
Raws li peb paub los ntawm txoj kev xav ntawm qhov gravitational teb, ib yam khoom uas muaj huab hwm coj ib txwm nyiam lwm yam khoom uas tau muab tso rau hauv qhov kev ncua deb ntawm qhov khoom. Raws li qhov kev ncua deb nce lub zog ntawm ob yam khoom qis dua nrog lub inverse square ntawm qhov kev ncua deb. Ntawm infinity, lub zog ntawm ob yam khoom yog xoom. Lub peev xwm ntawm ib qho chaw nyob ib ncig ntawm ib pawg yog txhais tau tias yog txoj haujlwm uas yuav tsum tau ua kom coj ib qho khoom ntawm chav tsev loj los ntawm infinity mus rau qhov muab. Txij li thaum muaj ib txwm nyiam qhov kev ua haujlwm yuav tsum ua tsis zoo; yog li ntawd, lub peev xwm ntawm ib qho taw tes yog ib txwm tsis zoo lossis xoom. Lub zog muaj peev xwm yog qhov muaj peev xwm sib npaug los ntawm qhov loj ntawm cov khoom coj los. Txoj kev khiav tawm yog txhais tau tias yog qhov nrawm uas yuav tsum tau muab rau ib yam khoom thiaj li xa mus rau qhov kawg yam tsis muaj lwm yam quab yuam. Nyob rau hauv cov nqe lus ntawm lub zog, lub kinetic zog vim yog muab tshaj tawm yog sib npaug zos rau lub peev xwm zog. Los ntawm qhov sib npaug no, peb tau txais kev khiav tawm raws li lub hauv paus square ntawm (2GM / r). Qhov twg r yog qhov kev ncua deb mus rau qhov taw tes qhov peev xwm ntsuas.
Kev nrawm nrawm
Lub orbital tshaj tawm yog qhov nrawm uas ib qho khoom yuav tsum tswj kom nyob rau ntawm ib qho orbit. Rau ib qho khoom mus rau hauv lub orbit nrog lub vojvoog r, lub orbital tshaj tawm yog muab los ntawm lub hauv paus square ntawm (F r / m) qhov twg F yog lub zog sab hauv thiab m yog qhov loj ntawm cov khoom orbital. Lub zog sab hauv hauv lub cev loj yog GMm / r2Los ntawm kev hloov qhov no, peb tau txais lub voj voog nrawm raws li lub hauv paus square ntawm (GM / r). Qhov no kuj tuaj yeem ua pov thawj tau siv txhua yam kev txuag hluav taws xob ntawm thaj chaw khaws cia. Nws yuav tsum tau muab sau tseg tias lub orbital tshaj tawm yog hloov cov kev taw qhia. Yog li ntawd, qhov no yeej yog acceleration, tab sis qhov loj ntawm qhov ceev tsis hloov. Lub zog me me poob rau hauv qhov chaw ua rau lub zog kinetic no txo qis, thiab tom qab ntawd cov khoom los mus rau qhov chaw qis dua thiaj li nyob ruaj khov.
Dab tsi yog qhov txawv ntawm Escape Velocity thiab Orbital Velocity?
• Kev khiav tawm yog qhov nrawm uas yuav tsum tau khiav tawm ntawm qhov chaw.
• Orbital tshaj tawm yog qhov nrawm uas yuav tsum tau khaws cov khoom hauv lub orbit.
• Ob qho ntawm cov khoom no yog ywj siab ntawm cov khoom txav.
• Txoj kev khiav tawm yuav txo qis thaum cov khoom nce mus txog qhov kawg thiab ntawm qhov kawg qhov nrawm yuav yog xoom.
• Lub orbital ceev tseem nyob tas li thoob plaws lub orbit. Lub orbital tshaj tawm hloov txoj kev.
