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
A) $1:2$
B) $1:1$
C) $2:1$
D) $4:1$
Explanation
(b) Work done does not depend on time
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.