STANDARD Physics Friction MCQ Question
In figure, the coefficient of friction between the floor and the block B is 0.1. The coefficient of friction between the blocks B and A is 0.2. The mass of A is m/2 and of B is m. What is the maximum horizontal force F which can be applied to the block B so that two blocks move together?
1.5 mg
0.05 mg
0.1 mg
0.45 mg
Correct Answer
Detailed Explanation
The maximum force F can be calculated by considering the frictional forces acting on both blocks. The friction between A and B is 0.2mg/2, and between B and the floor is 0.1mg. Solving for F using these values gives F = 0.45 mg.
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