Questions
A man of mass m stands on a crate of mass M. He pulls on a light rope passing over a smooth light pulley. The other end of the rope is attached to the crate. For the system to be in equilibrium, the force exerted by the men on the rope will be
detailed solution
Correct option is B
Considering free body diagram of man and crate system in vertical direction.2T=(M+m)g∴ T=(M+m)g2Talk to our academic expert!
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Natural length of the spring is 40 cm and its spring constant is 4000 N m-1. A mass of 20 kg is hung from it. The extension produced in the spring is (Given g = 9.8 m s-2)
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