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Propagating Error in a Pendulum

  1. Feb 11, 2009 #1
    1. The problem statement, all variables and given/known data

    The length of a string attached to a pendulum is measured with a precision of (+or-)0.2. The time of the oscillation is measured to a precision of (+or-)0.1. How many periods must you measure so that the contribution of the uncertainty in time is smaller than the uncertainty in length, when calculating g?

    2. Relevant equations


    3. The attempt at a solution

    I dont know where to go from here.
    Delta l and T are the error in those measurements
  2. jcsd
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