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Homework Help: I'm lost on this angular acceleration problem

  1. Mar 22, 2004 #1
    Okay, so there's a car traveling 97km/h (26.94 m/s). It's wheels have a diameter of 76cm (0.76 m), so the radius of the wheels are 0.38 m. I'm supposed to find the angular speed of the wheels about the axle.

    Can I say the speed of a tangent from the wheels is 26.94 m/s and use that to find the angular velocity?
  2. jcsd
  3. Mar 22, 2004 #2
    Yes, that's exactly what you should do. 26.94 m/s is the velocity of a point on the outer rim of the wheel, so you can use that to calculate the angular frequency of the wheel.
  4. Mar 22, 2004 #3
    http://physics.about.com/cs/rotationalmotion/a/010703.htm [Broken]
    Last edited by a moderator: May 1, 2017
  5. Mar 22, 2004 #4
    Thanks a bunch Chen!
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