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AP EAMCET201825 Apr 2018Morning ShiftPhysicsRotational MotionActual

A light rope is wound around a hollow cylinder of mass 4 kg and radius 40 cm . If the rope is pulled with a force of 40 N , its angular acceleration is______.

Options

  1. A0 . 40   rad   s - 2
  2. B0 . 25   rad   s - 2
  3. C25 rads - 2
  4. D40   rad   s - 2

Correct answer

C. 25 rads - 2

Step-by-step solution

Recall the relation of torque, τ = I α = F R ⇒ α = F R I = 40 × 0 . 4 4 × 0 . 4 × 0 . 4 = 25   rad   s - 2

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