Question

Why the work done by the conservative force is taken as negative of the potential energy?

Answer 1

Answer:

When you do conservative work on an object, the work you do is equal to the negative change in potential energy Wc=−ΔU. ... Gravity is doing work on the object by pulling it towards the Earth, but since you are pushing it in the other direction, the work you do on the box (and therefore the force) is negative