au22666 au22666

19-03-2021
Physics

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THIS IS DUE IN A FEW HOURS PLEASE HELP!!
A crane lifts a 614 kg roof 9.3 m high above the ground at a constant speed. It takes 48.4 seconds to do so.
Calculate the work done by the crane.

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keijosalonen keijosalonen

19-03-2021

Answer: W = 614 kg × 9.81 m/s² × 9.3 m

Explanation: work W is done against gravity. W = mgh

Time is needed to calculate work

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