Physics

Problem

A planet has mass

1.5\times10^{24}\,\text{kg}

and the value of

g

at its surface is

5.0\,\text{m s}^{-2}

. Determine the radius of the planet. Use

G = 6.67\times10^{-11}\,\text{N m}^{2}\text{kg}^{-2}