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Vladimir79 [104]
3 years ago
13

A weight lifter lifts a 345 N set of weights from ground level to a position over his head, a vertical distance of 1.89 m. How m

uch work does the weight lifter do, assuming he moves the weights at constant speed?
Physics
1 answer:
Pavlova-9 [17]3 years ago
3 0

Answer:652.05 J

Explanation:

Given

Weight of lifter W=345 N

vertical distance move h=1.89 m

Work done in lifting the weight is equal change in Potential Energy of weight

Change in Potential Energy =m g h

\Delta PE=345 \times 1.89=652.05 J

therefore work done is equal to 652.05 J  

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