Question

Gravitational potential of the body of mass m at a height h from surface of earth of radius R is (Take g = acceleration due to gravity at earth's surface)

(a) -g(R + h)

(b) -g(R - h)

(c) g(R + h)

(d) g(R - h)

Answer 1

Correct option (b) -g(R - h)

Explanation :

If a point mass m is placed at a height h from surface of earth, the potential energy is