Question

There will be an increase in potential energy of the system if work is done upon the system by

• A. any conservation or non-conservation force
• B. a non-conversation force
• C. a conversation force
• D. none of these

Answer 1

The correct option is C a conversation force

Potential energy is defined only a Conservative forces,i.e the forces whose work done doesn't depend on path taken.

$\int$dU=-$\int Fdx$=+ve if work is done on on system. Thus potential energy of system will increase.