Asked by MOHAMED
A block and tackle system consisting of a 5 pulleys is used to raise a load of 400N through a height of 10cm. If the work done against friction is 100J.calculate the work done by the effort, the efficiency of the machine, the effort applied
Answers
Answered by
Anonymous
work output = 400 N * 0.10 m = 40 Joules
work input = 40 + 100 = 140 Joules
eff = 100 * 40/140 = 28.6 % efficient
I do not know your pulley arrangement so can not calculate input effort force
work input = 40 + 100 = 140 Joules
eff = 100 * 40/140 = 28.6 % efficient
I do not know your pulley arrangement so can not calculate input effort force
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