Question
If OP makes 4 revolutions in on second the angular velocity in radians per seconds is:
  1. $\pi$
  2. $2\pi$
  3. $4\pi$
  4. $8\pi$

Answer

  1. $8\pi$

Solution:

$\text{Angular velocity}=\frac{\text{Distance}}{\text{Time}}$

$=\frac{4\times2\pi}{1}$

$=8\pi\ \text{radians}$

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