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NEET 2001 Physics question

PhysicsSystems of Particles and Rotational MotionNEET 2001

250 N force is required to raise 75 kg mass from a pulley. If rope is pulled 12 m then the load is lifted to 3m, the efficiency of pulley system will be : -

Answer: (3)

Solution

Efficiency . Useful work $= 75×10×3 = 2250\

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Question ID VK-088780