Physics - Gravitation Question with Solution | TestHub

A particle of mass $10\mathrm{g}$ is kept on the surface of a uniform sphere of mass $100\mathrm{kg}$ and radius $10\mathrm{cm}$. Find the work to be done against the gravitational force between them to take the particle far away from the sphere (you may take $\mathrm{G}=6.67\times 10^{-11}{\mathrm{Nm}}^2/{\mathrm{kg}}^2$ )