Forces From Opposite Sides On A Block

Question

Suppose we have an indestructible box in space , and we apply equal forces on two opposite side of box , the box wont move but then where will the energy go?(Conservation of energy)

Answer 1

Energy is not required to produce a force. It is the force multiplied by the distance, known as the work done, that represents the kinetic energy transferred to the box. In this case, the box doesn't move, so no work is being done on the box, and hence no energy is being transferred to the box.

The same logic applies for a block at rest on a table - both gravity and the normal force are acting on it, but the block's kinetic energy remains at zero and potential energy remains unchanged.