Physics

Problem

A spherical planet has a radius of

6.2\times10^{6}\,\text{m}

. The acceleration due to gravity measured at its surface is

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

. Calculate the mass of the planet. (ii) Hence determine the gravitational force that acts on a

1200\,\text{kg}

landing craft resting on the planet’s surface.