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Natural FrequencyWhat does the natural frequency of an object depend on?

  1. Jul 1, 2009 #1
    What does the natural frequency of an object depend on?

    Whenever I try to look this up, I usually read that the natural frequency depends on "intrinsic" properties or a "variety" of factors. Is the natural frequency independent for each object/is there any universal factor the natural frequency depends on?
  2. jcsd
  3. Jul 1, 2009 #2
    No, it's always going to be a complicated function of what the object's made of, its shape, whether it has defects, the temperature, the humidity, etc. Generally it's not feasible to calculate the natural frequency of a real life object it's pretty much always much much easier to just find it experimentally.
  4. Jul 1, 2009 #3
    Okay thanks for that.

    Somewhat unrelated, if you were to, lets say, take a guitar into space. The guitar strings each have their own natural frequency. However if you were to pluck one of the strings, would a frequency (and corresponding wave) be produced? Doesn't sound, which is produced from such an event, require a medium?

    --- Nevermind

    The object would just vibrate, no wave produced.
    Last edited: Jul 1, 2009
  5. Jul 1, 2009 #4


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    Gold Member

    Yes. The medium is: first the string, then the guitar body. The wave would not, however, propogate beyond the physical confines of the guitar itself without the presence of a medium such as air (or any other mass in contact with the guitar).
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