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Answer to Question #37706 in Mechanics | Relativity for Ashwin

Question #37706
4 men lift 250kg box to a height of 1m and hold it without raising or lowering it.
(a)How much work is done by the men in lifting the box?
(b)how much work do they do in just holding it?
(c)Why do they get tired while holding it?
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11.12.13, 16:29

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