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Physics, 03.07.2019 21:50 bedsaul12345

A2000-kg elevator rises from rest in the basement to the fourth floor, a distance of 25 m. as it passes the fourth floor, its speed is 4.7 m/s. there is a constant frictional force of 437n. what is the work done by the lifting mechanism?

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A2000-kg elevator rises from rest in the basement to the fourth floor, a distance of 25 m. as it pas...
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