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JEE Main Physics question

PhysicsLaws of MotionJEE Main

A body of mass 40 kg resting on a rough horizontal surface is subjected to a force P which is just enough to start the motion of the body. If μ_s = 0.5, μ_k = 0.4, g = 10 ms⁻², and the force P continues to act on the body even after motion has started, the acceleration of the body is

Answer: (B)

Solution

P = μ_s mg = 0.5×40×10 = 200 N (held constant). Once moving, kinetic

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Question ID VK-153015