Physics · Laws of Motion
In the given setup, blocks A and B have masses 2M and M respectively. Block A lies on a rough horizontal surface (μ = coefficient of friction). The string connecting A and B is massless and inextensible, and the pulley is massless and frictionless. An external force F is applied horizontally on A, and the system moves to the left with a uniform speed. On reversing the direction of F and reducing its magnitude to F/2, the system accelerates with block B moving downwards. The acceleration 'a' of block B is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(3 - 2μ)g6✓
- 2(2 - 3μ)g6
- 3(3 - 2μ)g3
- 4(2 - 3μ)g3
Correct answer
(3 - 2μ)g6
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