The gravitational potential energy of a body at a distance `r` from the centre of the Earth is `U` where `r gt R` (radius of Earth). What is the weight of body at the point ?

Explanation

Magnitude of Gravitational potential energy of a body of mass `m` at a distance `r` from the centre of Earth of mass `M` is,
`U = (GM m)/(r ) = ((GM)/(r^(2))) rm = g r m`
where `(GM)/(r^(2)) = g =` acceleration due to gravity at a distance `r` from the centre of Earth
Weight of body at given location `= mg = U//r`