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Pendulum String Breaking Point Problem

  1. Oct 3, 2006 #1
    A 2.05 kg ball is attached to the bottom end of a length of fishline with a breaking strength of 10 lb (44.5 N). The top end of the fishing line is held stationary. The ball is released from rest with the line taut and horizontal ( = 90.0°). At what angle (measured from the vertical) will the fishline break?

    How do you figure this out without knowing the length of the pendulum string?
  2. jcsd
  3. Oct 4, 2006 #2


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    Homework Helper

    Consider the force components along the line of the string.

    Then also use energy conservation.
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