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Homework Help: Pendulum acceleration homework

  1. Jan 27, 2009 #1
    1. The problem statement, all variables and given/known data

    A pendulum with is 2.00 m long makes 84.5 complete oscillations in 4.00 minutes. What is the acceleration of gravity at that spot?

    2. Relevant equations


    3. The attempt at a solution

    g= 0.0013707...

    Which doesn't make sense, and it seems way to simple to be getting 8 marks for it. What am I missing?
  2. jcsd
  3. Jan 27, 2009 #2


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    Homework Helper

    Re: Pendulum

    Find the time for one oscillation.
  4. Jan 27, 2009 #3


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    Science Advisor

    Re: Pendulum

    In your solution you seem to have just put in 240s for the period. This would certainly be true if the pendulum completed one oscillation in four minutes...
  5. Jan 27, 2009 #4
    Re: Pendulum

    Oh geez *smacks head* Such an easy solution. Thanks!
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