Question

State the law of conservation of energy? Show that when a body falls from a certain height the total mechanical energy remains conserved.      ​

Answer 1

Explanation:

law of conservation of energy states that the energy is neither created nor destroyed, it always transforms from one form to another .

Whenever a body falls from certain height ,the total mechanical energy is always conserved .Mechanical energy E is the sum of kinetic energy K.E. and potential energy P.E. of a freely falling body .Hence Mathematically:

E = k.E. + P.E. = Constant.