Assertion: Every periodic motion is not simple harmonic motion.
Reason: The motion governed by the force law F=-kx is simple harmonic.

Options

A. If both assertion and reson 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.

Answer

A

Explanation

Simple harmonic motion is a type of periodic motion, in which a particle moves to and from repeatedly about a meann positionn under a restoring force, which is always directed towards the mean position. The restoring force acting on the particle at that instant is, F=-kx where x is the displacement from mean position and k is the force constant.