$A$ chain of length $L$ and mass $m$ is placed upon a smooth surface. The length of $BA$ is $L-b$. Calculate the velocity of the chain when its end reaches $B$.
$A$ chain of length $L$ and mass $m$ is placed upon a smooth surface. The length of $BA$ is $L-b$. Calculate the velocity of the chain when its end reaches $B$.
- A
$\sqrt { \frac{{2g\,\sin \,\theta }}{L}\left( {{L^2} - {b^2}} \right)}$
- B
$2\sqrt { \frac{{g\,\sin \,\theta }}{L}\left( {{L^2} - {b^2}} \right)}$
- C
$\sqrt { \frac{{g\,\sin \,\theta }}{L}\left( {{L^2} - {b^2}} \right)}$
- D
$\sqrt { \frac{{g\,\sin \,\theta }}{{2L}}\left( {{L^2} - {b^2}} \right)} $
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