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# A rigid body of mass m kg is lifted uniformly 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 on the body against gravitation in both the cases are in ratio:4 : 11 : 11 : 22 : 1

A
1 : 2
B
4 : 1
C
1 : 1
D
2 : 1
Solution
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#### W=F.SAs work done is independent of time. So, both the man does same work.Hence, the work done on the body against gravitation are in ratio 1:1.

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