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Homework Help: Overtones/air columns

  1. Oct 1, 2008 #1
    1. The problem statement, all variables and given/known data
    An air column closed at one end has a fundamental frequency of 500Hz. What are the frequencies of the first two overtones?


    2. Relevant equations
    f = (n+1)f
    n = overtone

    f = nf

    3. The attempt at a solution
    f1 = (n+1)f
    = (1+1)500
    = 1000Hz

    f2 = (2+1)500
    = 1500Hz

    Im not getting it, what am I doing wrong? Its asking for frequency of overtone #1/overtone #2, I put the right values in the equation but I still dont get the right answer.
  2. jcsd
  3. Oct 3, 2008 #2


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    Homework Helper

    In a pipe closed at one end, only odd harmonics occur, so if the fundamental frequency is f1, then the frequencies of the harmonics will be fn = nf1, where n = 3,5...
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