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Help with Rotation questionquestion

  1. Nov 12, 2004 #1
    Don't get how to do this question

    A uniform ring 1.5m in diameter is pivoted at one point on its perimeter so that it is free to rotate about a horizontal axis. Initially the line joining the support point and the center is horizontal. (a)If the ring is released from rest, what is its maximum angular velocity? (b) What minimum initial angular velocity must it be given if it is to rotate a full 360 degrees?
     
  2. jcsd
  3. Nov 12, 2004 #2
    I can't visualise the whole thing. Can you explain this statement "Initially the line joining the support and the center is horizontal"? How is the line connects to the ring?
     
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