Is gravity endless energy?

Question

You need energy to produce a force that compensates gravity. So if you apply that force for a huge amount of time, will gravity ever be depleted?

In: 39

Answer 1

If you hold an object at a certain height, you are holding potential energy. As long as that object remains at that height, that potential energy never changes, even if you hold it there forever. You are not considered doing any work on it, no longer how long you hold it.