Physics · 2022
JEE Main · 26 June 2022, Shift 1 · Q35
A thin circular ring of mass M and radius R is rotating with a constant angular velocity 2 rads^-1 in a horizontal plane about an axis vertical to…
A thin circular ring of mass M and radius R is rotating with a constant angular velocity $\displaystyle 2 \mathrm{rads}^{-1}$ in a horizontal plane about an axis vertical to its plane and passing through the center of the ring. If two objects each of mass m be attached gently to the opposite ends of a diameter of ring, the ring will then rotate with an angular velocity (in $\displaystyle \mathrm{rads}^{-1}$ ).
Official answer
(3)
$\displaystyle \frac{2 \mathrm{M}}{(\mathrm{M}+2 \mathrm{~m})}$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.