Physics · 2021
JEE Main · 18 March 2021, Shift 1 · Q20
A thin circular ring of mass M and radius r is rotating about its axis with an angular speed ω. Two particles having mass m each are now attached at…
A thin circular ring of mass M and radius r is rotating about its axis with an angular speed $\displaystyle \omega$. Two particles having mass m each are now attached at diametrically opposite points. The angular speed of the ring will become :
Official answer
(2)
$\displaystyle \omega \frac{\mathrm{M}}{\mathrm{M}+2 \mathrm{~m}}$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.