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1. A woman draws water fixed pulley. The mass of bucket and watertogether is 6 kg. The force applied by the womanis 70 N. Calculate the mechanical advantage.(Take g = 10 m s-2)Ans. 0-8572. 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 4.0 s.Ans. (a) 2000 W, (b) 0.75, (c) 8-0 m3. A single fixed pulley and a movable pulley both areseparately used to lift a load of 50 kgf to theheight. Compare the effe |
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