Physics, 26.11.2020 14:00 gerardogonzale362
A boy pushes a lever down 2 meters with a force of 25 newtons. The box at the other end with a weight of 50 newtons moves up 2.5 meters.
a. Calculate the work input by the boy
Winput = Fd
b. Calculate the work output on the box
Woutput = Fd
c. Calculate the percentage efficiency of the lever.
Efficiency = (Woutput/Winput)100%
Answers: 1
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A boy pushes a lever down 2 meters with a force of 25 newtons. The box at the other end with a weigh...
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