jee-main 2021 Q4

jee-main · India · session2_18mar_shift1 Circular Motion 1 Ratio / Comparison of Circular Motion Quantities

A thin circular ring of mass $M$ and radius $r$ is rotating about its axis with an angular speed $\omega$. Two particles having mass $m$ each are now attached at diametrically opposite points. The angular speed of the ring will become:
(1) $\omega \frac { M } { M + m }$
(2) $\omega \frac { M + 2 m } { M }$
(3) $\omega \frac { M } { M + 2 m }$
(4) $\omega \frac { M - 2 m } { M + 2 m }$

A thin circular ring of mass $M$ and radius $r$ is rotating about its axis with an angular speed $\omega$. Two particles having mass $m$ each are now attached at diametrically opposite points. The angular speed of the ring will become:\\
(1) $\omega \frac { M } { M + m }$\\
(2) $\omega \frac { M + 2 m } { M }$\\
(3) $\omega \frac { M } { M + 2 m }$\\
(4) $\omega \frac { M - 2 m } { M + 2 m }$

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