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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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Assertion: A rigid disc rolls without slipping on a
fixed rough horizontal surface with uniform
angular velocity. Then the acceleration of lowest
point on the disc is zero.

Reason: For a rigid disc rolling without slipping
on a fixed rough horizontal surface, the velocity of
the lowest point on the disc is always zero.

View answer and explanation

Correct option: D

If Assertion is incorrect but Reason is correct.

Option D is correct because the acceleration of the lowest point on the disc is not zero due to centripetal acceleration, while the velocity of the lowest point is indeed zero for rolling without slipping.

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