A uniform chain has a mass $m$ and length $l$. It is held on a frictionless table with one-sixth of its length hanging over the edge. The work done in just pulling the hanging part back on the table is
A uniform chain has a mass $m$ and length $l$. It is held on a frictionless table with one-sixth of its length hanging over the edge. The work done in just pulling the hanging part back on the table is
- A
$\frac{{mgl}}{{72}}$
- B
$\frac{{mgl}}{{36}}$
- C
$\frac{{mgl}}{{12}}$
- D
$\frac{{mgl}}{{6}}$
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- [JEE MAIN 2017]
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