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MHT CET202311 May 2023Morning ShiftPhysicsMotion in Two DimensionsActual

A disc has mass M and radius R . How much tangential force should be applied to the rim of the disc, so as to rotate with angular velocity ' ' in time t ?

Options

  1. AMR 4 t
  2. BMR 2 t
  3. CMR t
  4. DM R t

Correct answer

B. MR 2 t

Step-by-step solution

Torque: = I = MR ^2 2 t array ll & = MR ^2 2 t & But = R F & F = R = MR 2 t array

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