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Urgent Physics Question-Please Respond

  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


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    Draw a diagram and consider gravity and the centrifugal 'force' on the rock.
    The net force must make a 10 degree angle with the horizontal.
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