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MHT CET2011PhysicsMotion in Two Dimensions

A wheel has a speed of 1200 revolutions per minute and is made to slow down at a rate of 4 rad / s ² . The number of revolutions it makes before coming to rest is

Options

  1. A143
  2. B272
  3. C314
  4. D722

Correct answer

C. 314

Step-by-step solution

²= ₀²-2 a aligned 0 &=4 ² n²-2 a &= 4 ² ( 1200 60 )² 2 4 &=200 ² rad 2 n &=200 ² n &=100 =100 3.14 aligned =314 revolution

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