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AP EAMCET202418 May 2024Morning ShiftPhysicsRotational MotionActual

A wheel of angular speed 600 rev / min is made to slow down at a rate of 2 rad s ⁻² . The number of revolutions made by the wheel before coming to rest is

Options

  1. A157
  2. B314
  3. C177
  4. D117

Correct answer

A. 157

Step-by-step solution

w ₀=600 rev / min = 600 2 60 =20 rad / s =-2 rad / s ^2, =0 using, ^2= ₀^2+2 aligned & 0=(20 )^2-2 2 & =100 ^2 aligned Number of revolutions = 2 = 100 ^2 2 =157

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