February 23, 2017

Homework Help: physics

Posted by henry on Tuesday, November 8, 2011 at 8:59am.

If a man has an average useful power output of 31 W, what is the minimum time, in s, it would take him to lift fifty 12.3 kg boxes a height of 2.3 m.

i'm not sure how to go about it if anyone can help me

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