= Linear momentum \(×\) Perpendicular distance of linear momentum from the axis of rotation ....\((i)\)
Final angular momentum of the system about point \(O\) ....\((ii)\)
Applying the law of conservation of angular momentum
\(Mv\,\left( {\frac{L}{2}} \right) = 2M\,{\left( {\frac{L}{2}} \right)^2}\omega \)
\(\,\omega = \frac{v}{L}\)
$\left(g=10 \,m / s ^{2}\right.$ નો ઉપયોગ કરો.)