A body of m kg slides from rest along the curve of vertical circle from point A to B in friction less path. The velocity of the body at B is: (given,…

A body of $\displaystyle m \mathrm{~kg}$ slides from rest along the curve of vertical circle from point $\displaystyle A$ to $\displaystyle B$ in friction less path. The velocity of the body at $\displaystyle B$ is: (given, $\displaystyle R=14 \mathrm{~m}, g=10 \mathrm{~m} / \mathrm{s}^2$ and $\displaystyle \sqrt{2}=1.4$ )