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Homework Help: Closed pipe question

  1. Apr 11, 2008 #1
    1. The problem statement, all variables and given/known data
    Once closed organ pipe has a length of 3.2 m. Frequency of the note played by this pipe is 27 Hz. When a second pipe is played at the same time, a 1.50 Hz beat note is heard. By how much is the second pipe too long?

    2. Relevant equations


    3. The attempt at a solution

    I'm really lost on this problem. I was thinking Lb-La=1/2 of wavelength, but I don't think that's right.

    Any direction is appreciated. Thanks in advance.
  2. jcsd
  3. Apr 11, 2008 #2


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