A rigid body of mass m kg is lifted uniform velocity by a man to a height of one meter in 30 sec. Another man lifts the same mass with uniform velocity to the same height in 60 sec. The work done on the body against gravitation by them are in ratio
Text Solution
Verified by ExpertsThe correct answer is:
B
work done by first man + work done by gravity = 0 ...(i)
work done by second man + work done by gravity = 0 ...(ii)
Ratio of work done by them = 1 : 1
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