Question

A then circular ring of mass $M$ and radius ${}^{\prime }{r}^{\prime }$ is rotating about its axis with a constant angular velocity $\omega$. Four objects each of mass $m$, are kept gently to the opposite ends of two perpendicular diameters of the ring. The angular velocity of the ring will be:

• A. $\frac{M\omega a}{4m}$
• B. $\frac{M\omega a}{M+4m}$
• C. $\frac{(M+4m)\omega }{M}$
• D. $\frac{(M+4m)\omega }{M+4m}$

Answer 1

The correct option is B $\frac{M\omega a}{M+4m}$