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Homework Help: How do you calculate the velocity of a pendulum at its lowest point?

  1. Oct 2, 2011 #1
    If you are given the tension of the pendulum at its lowest point and the length of the pendulum, how can you solve for the velocity of the pendulum?

    I've looked in my book and found the equation

    v= √ (2gL (1-cosΘ))

    But this equation doesn't help me unless I have the maximum angle the pendulum can swing. Is there another formula I should be aware of?
  2. jcsd
  3. Oct 2, 2011 #2
    oh thats easy! I see youre dilehma! i spelled it wrong haha. ok here we go. SO, this will have everything to do with centripetal force. What do you know about that?
  4. Oct 2, 2011 #3
    basically, centripetal force is the force that allows circular motion which always points towards the center.
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