AktiraAktira JEE
Subscribe
PhysicsJEE Main 21 Jan 2026, Shift 2·Q18·MCQ·Easy–moderate

Circular Motion · Dynamics of circular motion

A large drum having radius R is spinning around its axis with angular velocity ω\omega, as shown in figure. The minimum value of ω\omega so that a body of mass M remains stuck to the inner wall of the drum, taking the coefficient of friction between the drum surface and mass M is μ\mu, is :
  1. (1)μgR\sqrt{\dfrac{\mu g}{R}}
  2. (2)2gμR\sqrt{\dfrac{2g}{\mu R}}
  3. (3)g2μR\sqrt{\dfrac{g}{2\mu R}}
  4. (4)gμR\sqrt{\dfrac{g}{\mu R}}

Video solution coming soon

We're animating every PYQ step by step. Subscribe to get them first.

Subscribe

See the full 21 Jan 2026, Shift 2 paper

More on Dynamics of circular motion