STANDARDPhysics-Laws of Motion
STANDARD Physics Friction MCQ Question
Type: MCQ-numerical-Medium-Class 11
Two blocks A and B of masses 10 kg and 15 kg are placed in contact with each other rest on a rough horizontal surface as shown in the figure. The coefficient of friction between the blocks and surface is 0.2. A horizontal force of 200 N is applied to block A. The acceleration of the system is
A
4 m s⁻²
B
6 m s⁻²
C
8 m s⁻²
D
10 m s⁻²
Correct Answer
Option B
Detailed Explanation
The net force acting on the system is 150 N after accounting for friction. Using F = ma, the acceleration a = 150 N / (10 kg + 15 kg) = 6 m s⁻².
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