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Homework Help: Dampened Oscillations Problem

  1. Dec 18, 2007 #1
    [SOLVED] Dampened Oscillations Problem

    A pendulum of length 1.00 m is released from an initial angle of 15.0°. After 1200 s, its amplitude is reduced by friction to 5.5°. What is the value of b/2m?

    How do you do this one? I know it has something to do with the formula w= sqrt(W0^2 - (b/2m)^2). I tried plugging in sqrt(g/L) for W0, but I don't know what to use for the first w.
  2. jcsd
  3. Dec 20, 2007 #2
    Never mind. It turns out I was using the wrong formula.
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