5. A weight lifter lifted a load of 400kgf to a height of 2.5 m. Calculate the work done Take
g=10N/kg
(2 points)
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Answer:
work done will be 10000 J
Explanation:
For vertical motion,
W = P.E
W = mgh
W = (400kg)(10N/kg)(2.5m)
W = 10000Nm
W = 10000J
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