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 Form 3 Physics: Work, Energy, Power and Machines Questions and Answers

A certain machine uses an effort of 400N to raise a load of 600N. If the efficiency of the machine is 75%, determine its velocity ratio.

 (2m 10s)
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Answer Text:
E=M.AV.R=0.75
M.A=LOADEFFORT=600400
0.75=1.5V.R
V.R=1.50.75=2


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