Assertion (A): Centripetal force does no work .
Reason (R) : Force and displacement are perpendicular to each other

Options

A. If both A and R are true and R is the correct explanation of A.
B. If both A and R are true but R is not the correct explanation of A.
C. If A is true but R is false
D. If A is false but R is true.

Answer

A

Explanation

Since centripetal force is perpendicular to the displacement of the body, work done is zero as
`W=vec F . Vec d=Fd cos theta`