A diagram is drawn showing a swing set with a swing pulled backward prior to release. The diagram shows how the swing will move forward and then backward after it is initially released. At which point in the diagram is all of the energy gravitational potential energy?

Answer 1

at the top of the swing when the velocity is zero and the height is max
constant total energy = m g h + (1/2) m v^2
when v =0, m g h = potential E is max, v^2 is never less than 0 of course :)