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PhysicsJEE Main 2 Apr 2026, Shift 2·Q2·MCQ·Easy–moderate

Circular Motion · Dynamics of circular motion

A 0.5 kg mass is in contact against the inner wall of a cylindrical drum of radius 4 m rotating about its vertical axis. The minimum rotational speed of the drum to enable the mass to remain stuck to the wall (without falling) is 5 rad/s. The coefficient of friction between the drum's inner wall surface and mass is . (Take g=10 m/s2g = 10\ \mathrm{m/s^2})
  1. (1)0.1
  2. (2)0.5
  3. (3)0.7
  4. (4)0.3

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