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Assertion: Work done by friction over a ...

Assertion: Work done by friction over a closed path is not zero and no potential energy can be associated with friction.
Reason: Every force encountered in mechanics have an associated potential energy.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
D
Frictional work is not completely recoverable. When the force of friction is the total mechanical energy is not conserved. The friction force is therefore called a nonconservative or a dissipative force.
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