A binary star system of masses 3m and m are separated by a distance of L. they revolve about the center of mass of system due to mutual gravitational pull.

1. The total energy of the system is
a)-3Gm^2/L b)-3Gm^2/2L c) 3Gm^2/L d) -Gm^2/4l

2. The ratio of kinetic energy of the stars is
a)1:2 b)1:3 c)1:9 d)1: ROOT3

3. The speed of the heavier star is
a)Wholeroot(3Gm/4L) b)3/2Wholeroot(Gm/L) c)Wholeroot(Gm/4L) d)2wholeroot(Gm/L)

Question

A binary star system of masses 3m and m are separated by a distance of L. they revolve about the center of mass of system due to mutual gravitational pull.
 
1. The total energy of the system is
a)-3Gm^2/L b)-3Gm^2/2L c) 3Gm^2/L d) -Gm^2/4l

2. The ratio of kinetic energy of the stars is 
a)1:2 b)1:3 c)1:9 d)1: ROOT3

3. The speed of the heavier star is
a)Wholeroot(3Gm/4L) b)3/2Wholeroot(Gm/L) c)Wholeroot(Gm/4L) d)2wholeroot(Gm/L)

irishboy123 · Answer

cool question @NikhilNaidu first of all, find the centre of mass of the system. the barycentre: https://en.wikipedia.org/wiki/Barycenter

parthkohli · Answer

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