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

Answer ⇒ Option (c). Potential Energy. 

Explanation/Reason ⇒ The potential energy in the body is due to the changed configuration. Now, as per as the Question, conservative internal force does the works on the system , thus all the stored potential energy is changed into the Kinetic energy. So all the negative work done by the conservative internal forces changed into the Potential Energy of the system. 

Hence, Option (c) is correct.


Hope it helps.