Q.
A body of mass m kg is lifted by a man to a height of one metre in 30 sec. Another man lifts the same mass to the same height in 60 sec. The work done by them are in the ratio
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a
1 : 2
b
1 : 1
c
2 : 1
d
4 : 1
answer is B.
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Detailed Solution
Work done does not depend on time.
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