Question

Assertion : In case of pure rolling, the force of friction becomes zero.
Reason : The speed at the point of contact is zero.

• A. If both the assertion and reason are true and reason explains the assertion.
• B. If both the assertion and reason are true but reason does not explain the assertion.
• C. If assertion is true but reason is false.
• D. If assertion is false but reason is true.

Answer 1

Answer: (A)

As there is no relative motion between two surfaces at point of contact so force of friction will be zero