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  4. A body of mass m is lifted by a man to a height of one meter in 30 s . Another man lifts the same mass to the same height in 60 s . The work done by them are in the ratio

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Q. A body of mass $m$ is lifted by a man to a height of one meter in $30 \, s$ . Another man lifts the same mass to the same height in $60 \, s$ . The work done by them are in the ratio

NTA AbhyasNTA Abhyas 2022

Solution:

Work done by both the persons is the same and is given as,
$W=mgh$
It does not depend upon the time taken to perform the work.