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Rotational Motion question!

  1. Feb 28, 2008 #1
    [SOLVED] Rotational Motion question!

    1. The problem statement, all variables and given/known data
    A wheel has a radius of 2.8 m. How far does a point on the circumference travel if the wheel is rotated through angles of 30 degrees, 30 radians, and 30 revolutions?

    2. Relevant equations

    3. The attempt at a solution
    I tried to use s=2pie(r) & theta=s/r but neither worked.

    This problem seems like it would be super easy, but I really have no idea how to do it! Help!

    Last edited: Feb 28, 2008
  2. jcsd
  3. Feb 28, 2008 #2


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    It is super easy. s=r*theta works if the angle is measured in radians. That makes the 30 radian part pretty easy. For the others you'll need to convert degrees and revolutions to radians.
  4. Feb 28, 2008 #3
    Thank you!
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