An object of mass 95.0kg rests on the surfacee of a planet with a mass of 3.5 x 10^15kg and a radius of 7.8 x 10^8m.
a) Calculate the foce of gravity acting on the object on the surface of the plant
b) Determine the gravitational field strength 'g' at the planets surface.
c) Calculate the force of gravity acting on the object if it is placed at a position 4.7 x 10^9m above the planet's surface