• # question_answer A thin circular ring of mass M and radius R is rotating about its axis with a constant angular velocity$\omega$. Two objects each of mass m, are attached gently to the opposite ends of a diameter of the ring. The ring now rotates with an angular velocity A) $\frac{\omega M}{M+m}$               B) $\frac{\omega (M-2m)}{M+2m}$C) $\frac{\omega M}{M+2m}$             D) $\frac{\omega (M+2m)}{M}$

In the absence of external torque, angular momentum remains constant. $L=l\omega =l'\omega '$ or $M{{R}^{2}}\omega =(M+2m){{R}^{2}}\omega '=\frac{\omega M}{M+2m}$ Hence, the correction option is [c].