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
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
$1:2$
$1:1$
$2:1$
$4:1$
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
Work done does not depend on time.