How much work is done by gravity

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Reference no: EM13311572

You want to lift a heavy box with a mass of 98 kg using a two pulley system.

a) With what minimum force do you have to pull down on the rope in order to lift the box slowly at a constant velocity?

b) If you lift the box by 1 m, how much work is done by gravity?

c) how much work is done by you?

Reference no: EM13311572

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