Physics · 2022
JEE Main · 25 June 2022, Shift 2 · Q33
A disc with a flat small bottom beaker placed on it at a distance R from its center is revolving about an axis passing through the center and…
A disc with a flat small bottom beaker placed on it at a distance $\displaystyle R$ from its center is revolving about an axis passing through the center and perpendicular to its plane with an angular velocity $\displaystyle \omega$. The coefficient of static friction between the bottom of the beaker and the surface of the disc is $\displaystyle \mu$. The beaker will revolve with the disc if :
Official answer
(2)
$\displaystyle R \leq \frac{\mu g}{\omega^2}$
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JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.