33 A Planet is revolving round the sun,its distance from the sun at apogee is xAand that at perigee is - Physics - Gravitation

Question

33 A Planet is revolving round the sun,its distance from the sun at
apogee is xAand that at perigee is rp The masses of planet and sun
are 'm' abd M respectively ,VA is the velocity of planet at apogee
and Vp is at perigee respectively and T is the time period for
revolution of planet round the sun, then ---------

Jyoti Pant · Accepted Answer

Your question is incomplete However here is hint for you
We have a relation for time period,T2=4π2r3GMAccording to question, r=xA+rp2T2=4π2GM(xA+rp2)3Or T2=π22GM(xA+rp)3According to the law of conservation of momentum,mvAxA=mvPrPOr vAxA=vPrP

Hope the above explanation will help you