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JEE Main Physics question

PhysicsWork, Energy and PowerJEE Main

A 60 kg weight is dragged on a horizontal surface by a rope upto 2 metres. If coefficient of friction is μ = 0.5, the angle of rope with the surface is 60° and g = 9.8 m/sec², then work done is [MP PET 1995]

Answer: (B)

Solution

Let T be the tension in the rope. The rope's vertical component reduces the normal force: N = mg − Tsin60°. For the body to move at constant velocity, the horizontal component

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Question ID VK-153436