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COMEDK202510 May 2025Evening ShiftPhysicsLaws of MotionActual

A body of mass 125 kg just slides down a rough inclined plane that rises 1 m in every 2 m. What is the angle of friction?

Options

  1. A5
  2. B3
  3. C8
  4. D6

Correct answer

D. 6

Step-by-step solution

The plane rises 1 m in every 2 m, so: = 1 2 = 30° When a body just slides down, it is at limiting equilibrium, so angle of friction = angle of inclination . = 30° = 6 radians

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