Question

what do you understand by gravitational potential energy of a body? drive an expression for it, when when a body of mass m is situated at a distance r from the centre of earth of mass M​

Answer 1

Answer:

Expression for Gravitational Potential Energy at Height (h) – Derive ΔU = mgh. When, h<<R, then, R + h = R and g = GM/R2. ⇒ Note: The weight of a body at the centre of the earth is zero due to the fact that the value of g at the centre of the earth is zero.