A fixed pulley is driven by a 100kg mass falling at a rate of 8.0m...

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A fixed pulley is driven by a 100kg mass falling at a rate of 8.0m in 4.0s. It lifts a load of 75.0kgf. What is the power input to the pulley taking the force of gravity on 1kg as 10N ?A. 200 WB. 2000 WC. 1000 WD. 1050 W

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