Question

Explain the conservation of mechanical energy for a free fall body.`​

Answer 1

Answer:

Law of Conservation of Mechanical Energy: The total amount of mechanical energy, in a closed system in the absence of dissipative forces (e.g. friction, air resistance), remains constant. This means that potential energy can become kinetic energy, or vice versa, but energy cannot “disappear”.

Answer 2

Using the law of conservation of energy (ESAHP)

Mechanical energy is conserved (in the absence of friction). ... As it falls back to the ground, it will lose this potential energy, but gain kinetic energy. We know that energy cannot be created or destroyed, but only changed from one form into another.