What is the important of mechanical energy?

The mechanical energy in an object is the sum of its kinetic and potential energy. In the normal every day physics that we observe, the total mechanical energy of a closed system (a system that is not gaining or losing energy) cannot change. That makes mechanical energy important. read more

The mechanical energy of an object is the sum of its energy in motion and its stored motion. This means it is the sum of its kinetic and potential energy. Although the kinetic and potential energy of an object can change, its mechanical energy remains constant. read more

Energy is the ability to do work, where work is the movement of an object when a force is applied to it. read more