Gravitation

A body (mass \(\mathrm{m}\) ) starts its motion from rest from a point distant \(R_0\left(R_0>R\right)\) from the centre of the earth. The velocity acquired by the body when it reaches the surface of earth will be ( \(\mathrm{G}=\) universal constant of gravitation, \(\mathrm{M}=\) mass of earth, \(\mathrm{R}\) = radius of earth)