Friction and Relative Motion – Rankers Physics
Topic: Laws of Motion
Subtopic: Friction

Friction and Relative Motion

Assertion (A): A man starts walking towards west. Friction force on him acts towards east.
Reason (R): Friction opposes relative motion.
 
(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)
(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(3) (A) is true but (R) is false
(4) Both (A) and (R) are false

Solution:

Assertion (A) is false; when walking west, the static friction force on the man acts west, in the direction of motion. Reason (R) is true as friction fundamentally opposes relative motion. Thus, (A) is false and (R) is true. Option (4) is selected as it correctly identifies (A) as false.

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