JEE Main Physics question

**Statement 1:** A wheel moving down a perfectly frictionless inclined plane will undergo slipping (not rolling motion).

**Statement 2:** For perfect rolling motion, the work done against friction is zero.

(A)Assertion is True, Reason is True; Reason is correct explanation for Assertion
(B)Assertion is True, Reason is True; Reason is not correct explanation for AssertionCorrect
(C)Assertion is True, Reason is False
(D)Assertion is False, Reason is True

Answer: (B)

Solution

With no friction there is no torque to spin the wheel at a rate matching its translation, so it slides down without "pure rolling" — Statement 1 is True. Separately, in ideal pure rolling, since the contact point has zero instantaneous

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Question ID VK-159160