GravitationMedium
Question
A double star is a system of two stars of masses m and 2m, rotating about their centre of mass only under their mutual gravitational attraction. If is the separation between these two stars then their time period of rotation about their centre of mass will be proportional to :
Options
A.r3/2
B.r
C.m1/2
D.m-1/2
Solution
Motion of m
mω2
T = 
∴ T ∝ r3/2 and T ∝ m-1/2
mω2
T = ∴ T ∝ r3/2 and T ∝ m-1/2
Create a free account to view solution
View Solution FreeMore Gravitation Questions
Knowing that the acceleration due to gravity on the Earth surface is g and the radius of the Earth is R, a small body of...If vo be the orbital of a satellite in a circular orbit cose to the earth′s surface and ve is the escpe velocity f...A double star is a system of two stars of masses m and 2m, rotating about their centre of mass only under their mutual g...Two bodies of masses m and 4 m are placed at a distance r. The gravitational potential at a point on the line joining th...A hollow spherical shell is compressed to half its radius. the gravitational potential at the centre...