How to solve this Physics Question?
A hand-operated winch is used to raise a 300 kg anchor. the winch handle, whos length is .75m, is turned 1.28 times. the mechanical advantage of the system is 3. how much work is done in raising the anchor? assume 100% efficiency
Since η = 1, M.A = V.R,Velocity ratio =1.28*0.75 / r& M.A = 3
and hence .1.28*0.75 / r = 3 Or r =0.32m
Work done by load = 300*g* 2* π * 0.32 = 5911J
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