Four men lift a 250 kg box to a height of 1 m and hold it without raising or
lowering it.
a) How much work they do in just holding it.
b) why do they get tired while holding it (g=10 ms
-2
)
c) why do they get tired while holding it (g=10 ms
-2
)
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Answered by
1
Answer:
A= 2500J
B=In holding the box the energy of men loses so he get tired
Explanation:
A) W=M*G*H
W=250*1*10
W=2500 Joule
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