Question
Assertion : Simple harmonic motion is a uniform motion.
Reason : Simple harmonic motion is the projection of uniform circular motion.

Answer

(e) In simple harmonic motion, $v=\omega \sqrt{a^2-y^2}$ as $y$ changes, velocity $v$ will also change. So simple harmonic motion is not uniform motion. But simple harmonic motion may be defined as the projection of uniform circular motion along one of the diameter of the circle.

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