Assertion (A): It is easier to pull a lawn roller than to push it. Reason (R): Pushing increases the apparent weight of the roller, thereby increasing the frictional force. MCQ with Answer and Explanation

When you pull a roller at an upward angle, the vertical component of the applied force acts strictly upwards, reducing the normal reaction (N = mg - Fsin_theta) and thus reducing friction (muN). When you push it at a downward angle, the vertical component adds to the weight (N = mg + Fsin_theta), increasing the normal reaction and consequently increasing the rolling friction.