Question

A bicycle chain of length $1.6m$ and of mass $1kg$ is lying on a horizontal floor. If $g=10m{s}^{-2}$, the work done in lifting it with one end touching the floor and the other end $1.6m$ above the floor is

• A. $10J$
• B. $3.2J$
• C. $8J$
• D. $16J$

Answer 1

Answer: (C)

$W=\frac{MgL}{2}$