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Homework Help: Centripetal force in pendulum

  1. Nov 25, 2006 #1
    How do you calculate the centripetal force in pendulums?
    THx
     
  2. jcsd
  3. Nov 25, 2006 #2

    radou

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    Draw a free body diagram first. Its always a good start.
     
  4. Nov 25, 2006 #3

    nrqed

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    You use [itex] F_c = m {v^2 \over R} [/itex] where R is the radius of the circle which is the length of the pendulum. You have to be given the speed or to find it using conservation of energy.

    Patrick
     
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