Homework Answers
given
mass m = 500 kg
height h = 20 m
efficiency = 0.92
a) work out put w = mgh
w = 500*9.81*20 = 98100 J
wout = 0.92*98100 = 90252 J
b) work lost = wlost = 98100-98100*0.92 = 7848 J
c) power p = 90252/2*60 = 752.1 W
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For
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help with part 5
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For
two objects with masses 100kg and 500 kg to be 20 meters apart,
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