JEE Main 2022 (25 Jun, Shift 2) Physics Q33: Circular Motion

Question

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 perpendicular to its plane with an angular velocity

\omega

. The coefficient of static friction between the bottom of the beaker and the surface of the disc is

\mu

. The beaker will revolve with the disc if :

Official answer

Option 2

NTA final key.

Accepted Answer

Option 2: $R \leq \frac{\mu g}{\omega^2}$

Answer

$R \leq \frac{\mu g}{2\omega^2}$

Answer

$R \leq \frac{\mu g}{\omega^2}$

Answer

$R \geq \frac{\mu g}{2\omega^2}$

Answer

$R \geq \frac{\mu g}{\omega^2}$

JEE Main 25 June 2022, Shift 2, Physics Q33