Kev Nkag Siab
Ib lub cev khov kho suav tias yog muaj ntau yam khoom me me, thiab qhov hnyav ntawm ib yam khoom yog qhov sib sau ua ke ntawm cov khoom me me uas ua rau yam khoom ntawd. Qhov chaw nruab nrab ntawm qhov hnyav yog ib qho chaw ntawm ib yam khoom uas qhov hnyav ntawm txhua yam khoom me me uas ua rau yam khoom ntawd suav tias yog sib sau ua ke ntawm qhov ntawd.
Cov mis
Txhua lub cev khov kho raug xav tias muaj ntau yam khoom me me, txhua yam sib nrug sib luag. Txawm li cas los xij, txhawm rau kom yooj yim rau kev txiav txim siab qhov chaw nruab nrab ntawm pawg, kev yooj yim yog ua los ntawm kev xav tias lub cev khov kho tsuas muaj ob lub khoom me me xwb. Ob lub khoom me me no tuaj yeem hu ua lub cev khov kho.
m1 = qhov hnyav ntawm cov khoom me me 1, m2 = qhov hnyav ntawm cov khoom me me 2. Ob qho khoom me me no nyob rau ntawm x-axis. Cov khoom me me 1 nyob ntawm qhov deb x1 ntawm y-axis thiab cov khoom me me 2 nyob ntawm qhov deb x2 los ntawm y-axis. Lub hauv paus ntawm qhov hnyav yog luv ua PM. Ob qho khoom me me nyob rau ntawm x-axis, yog li ntawd lub hauv paus ntawm qhov hnyav ntawm ob qho khoom me me yog sau ua xPM.
m = m1 +m2 = tag nrho qhov hnyav ntawm ob lub khoom me me. Yog tias m1 +m2 = m ces qhov chaw nruab nrab ntawm qhov hnyav yog nyob nruab nrab ntawm ob lub khoom me me. Kev suav lej, qhov sib npaug tuaj yeem hloov mus rau:
Yog tias m1 > m2 ces qhov chaw nruab nrab ze rau m1. Ntawm qhov tod tes, yog tias m2 > m1 ces qhov chaw nruab nrab ze rau m2. Cov kab zauv saum toj no tsuas yog siv rau ib qho kev ntsuas xwb, qhov twg lub particle nyob rau ntawm ib qho ntawm cov coordinate axis (x-axis).
Yog tias ob lub khoom me me nyob hauv ib lub dav hlau (2 qhov ntev) ces peb tuaj yeem ntxiv qhov nruab nrab ntawm qhov sib npaug rau qhov sib koom ua ke y.
Cov mis saum toj no tsuas yog siv tau ob lub me me xwb. Yog tias muaj ntau lub me me ntxiv, peb tuaj yeem nthuav cov mis ntxiv.
Cov mis rau x coordinate:
Cov mis rau y coordinate:
Cov mis rau z coordinate:
Yog tias cov khoom me me nyob rau ntawm ib lub dav hlau (ob qhov ntev) ces qhov chaw nruab nrab ntawm cov khoom yog nyob nruab nrab ntawm xPM thiab yPMNtawm qhov tod tes, yog tias cov khoom me me nyob hauv qhov chaw (peb qhov ntev), ces qhov chaw nruab nrab ntawm qhov hnyav ntawm cov khoom yog nyob nruab nrab ntawm xPMThiabPM thiab zPM.
