Physics - Gravitation Question with Solution | TestHub

Consider a spherical homogeneous cloud of mass M made by an explosion. Due to energy received from the explosion, it is expanding and the expansion is spherically symmetric. At an instant its radius is ${\mathrm{R}}_0$ and all the particle on the surface are moving away from its center with velocity $V_0$. Its radius when expansion ceases is given by $\frac{{\mathrm{nGMR}}_0}{2\mathrm{GM}-{\mathrm{R}}_0{\mathrm{V}}_0^2}$. Find n .