A mass $m$ slips along the wall of a semispherical surface of radius $R$. The velocity at the bottom of the surface is
A mass $m$ slips along the wall of a semispherical surface of radius $R$. The velocity at the bottom of the surface is
$\sqrt {Rg} $
$\sqrt {2Rg} $
$2\sqrt {\pi Rg} $
$\sqrt {\pi Rg} $
A mass $m$ slips along the wall of a semispherical surface of radius $R$. The velocity at the bottom of the surface is
By applying law of conservation of energy
$mgR = \frac{1}{2}m{v^2} \Rightarrow v = \sqrt {2Rg} $