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AP EAMCET202315 May 2023Evening ShiftPhysicsRotational MotionActual

The angular peed of a rigid body rotating about a fixed axis is (8-2 t) rad s ⁻¹ . The angle through which the body rotates before it comes to rest is

Options

  1. A8 rad
  2. B12 rad
  3. C16 rad
  4. D20 rad

Correct answer

C. 16 rad

Step-by-step solution

Angular speed, =8-2 trad / s aligned & d dt =8-2 t & _ d = (8-2 t ) dt & =8 t - 2 t ^2 2 =8 t - t ^2 & When =0 & 8-2 t =0 t =4 ~s & =8 4-4^2=32-16 & =16 rad aligned

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