Object A has a gravitational potential energy of 24 joules when it rests on a shelf 5 m above the ground. Object B has a mass that is three times the mass of Object A. What would be the gravitational potential energy of object B when it rests on a shelf 10 m above the ground?

Answer 1

G.P.E. = m g h

B is three times as massive as A ... and is twice as high above the ground

g.p.e. B = g.p.e. A * 3 * 2