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Homework Help: Circular Motion

  1. Feb 12, 2004 #1
    An athlete whirls a 6.50-kg hammer tied to the end of a 2.0-m chain in a horizontal circle. The hammer moves at the rate of 1.1 rev/s.

    What is the centripetal acceleration of the hammer?
    What is the tension in the chain?
     
  2. jcsd
  3. Feb 12, 2004 #2

    Chi Meson

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    What have you tried so far?

    a = (v^2)/r is a start
     
  4. Feb 12, 2004 #3
    1.1 rev/s is not the velocity right?
     
  5. Feb 12, 2004 #4
    It is, but you must convert to m/s for use in the equation for centripetal acceleration.
     
  6. Feb 12, 2004 #5
    how do you convert it?
     
  7. Feb 12, 2004 #6
    (1.1 rev/s)(2piR meters/rev)
     
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