Question

A body weighs 63 N on the surface of the earth. What is the gravitational force on it due to the earth at a height equal to half the radius of the earth?

Answer 1

Weight of the body, W = 63 N

Acceleration due to gravity at height h from the Earth’s surface is given by the relation:

Where,

g = Acceleration due to gravity on the Earth’s surface

Re = Radius of the Earth

Weight of a body of mass m at height h is given as: