STANDARDPhysics-Laws of Motion

STANDARD Physics Friction MCQ Question

Type: MCQ-numerical-Medium-Class 11

The coefficient of static friction between the box and the train's floor is 0.2. The maximum acceleration of the train in which a box lying on its floor will remain stationary is (Take g = 10 m s⁻²)

A

2 m s⁻²

B

4 m s⁻²

C

6 m s⁻²

D

8 m s⁻²

Correct Answer

Option A

Detailed Explanation

As acceleration of the box is due to static friction, ma ≤ fₛ ≤ μₛmg. Therefore, aₘₐₓ = μₛg = 0.2 × 10 m s⁻² = 2 m s⁻².

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