Question

The negative of the work done by the conservative internal forces on a system equals the change in 

(a) total energy 

(b) kinetic energy 

(c) potential energy 

(d) none of these.

Answer 1

(c) potential energy

Explanation:- 

The Potential energy of a system is due to its configuration. When conservative internal forces do work on the system, the potential energy changes to kinetic energy. So negative of work done by the conservative internal forces will be the change in potential energy.