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23 Nov 2019
A weightlifter lifts a weight of mass 20.0 kg through a distance of 0.400 m, then lowers it gently. He does this 15 times. Calculate the net work done by the force of friction due to the rope rubbing on the support Ff = 100 N). Assume that friction is the only non-conservative force acting.
A weightlifter lifts a weight of mass 20.0 kg through a distance of 0.400 m, then lowers it gently. He does this 15 times. Calculate the net work done by the force of friction due to the rope rubbing on the support Ff = 100 N). Assume that friction is the only non-conservative force acting.
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