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Pendulum bob oscillation

  1. May 18, 2010 #1
    a pendulum bob of mass m hangs on a string of length l. what is the espression for the arc length of the bob if its discplaced through an angle theta.
     
  2. jcsd
  3. May 18, 2010 #2
    well if you know the maximum angle of displacement the arc length is simply

    theta*l
     
  4. May 26, 2010 #3
    problem is, the angle of discplacement is not known. its part of the expression
     
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