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2. A fixed pulley is driven by a 100 kg mass falling ata rate of 8.0 m in 4-0 s. It lifts a load of 75.0 kgf.Calculate :(a) the power input to the pulley taking the force ofgravity on 1 kg as 10 N.(b) the efficiency of the pulley, and(c) the height to which the load is raised in 40 s.

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