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Question 30358
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Rigid Body Dynamics: JEE — Rolling Condition MCQ

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JEE — Rolling ConditionHardQuestion 30358

Question

A body rolls on a surface. For pure rolling without slipping, which statement is correct?
  1. A
    Friction does negative work on the body
  2. B
    Friction does positive work on the body
  3. C
    Friction does no work on the body
    Correct
  4. D
    There is no friction in rolling

Correct answer

Friction does no work on the body

Explanation

In pure rolling, the contact point is instantaneously at rest, so friction acts at zero velocity → power = F·v = 0 → no work done by friction.

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