NEET Physics Question - Laws of Motion

Assertion (A): The acceleration of a body moving down on a rough inclined plane is greater than the acceleration due to gravity.

Reason (R): The body is able to slide on an inclined plane only when its acceleration is greater than acceleration due to gravity.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Assertion (A) is false. The acceleration of a body on a rough inclined plane is \(a = g(\sin\theta - \mu\cos\theta)\), which is always less than \(g\).
Reason (R) is also false. A body slides when the component of gravity along the plane overcomes static friction, not when its acceleration is greater than \(g\). Thus, both (A) and (R) are false.

Rankers Physics

Acceleration on Inclined Plane

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