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Nonuniform Circular Motion

  1. Nov 10, 2004 #1
    This might be an easy problem, but I am missing something and am not sure where to start so here is the problem:

    A student ties a 500g rock to a 1.0-m-long string and swings it around her head in a horizontal circle. At what angular velocity, does the string tilt down at a 10 degree angle?

    If anyone can help me get going on this problem I would greatly appreciate it.
     
  2. jcsd
  3. Nov 10, 2004 #2
    Have you thought about the problem? Please show us what you have done. Begin with a free-body diagram and the formula
    [tex]F_{centripetal}=\frac{mv^{2}}{r}[/tex]
     
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