Physics, 10.09.2021 18:20 hatl

A man has amass of 80kg. He ties himself to one end of rope which passes over a single fixed pulley. He pulls on the other end of the rope to lift himself up at an average speed of 50cms-1. What is the average useful power at which he is working?

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A man has amass of 80kg. He ties himself to one end of rope which passes over a single fixed pulley....

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