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Homework Help: Frequency of tuning forks

  1. Dec 7, 2009 #1
    1. The problem statement, all variables and given/known data

    Two tuning forks are struck and the sounds from each reach your ears at the same time. One sound has a frequency of 256 Hz, and the second sound has a frequency of 258 Hz. The underlying "hum" frequency that you hear is:
    A. 2 Hz
    B. 256 Hz
    C. 258 Hz
    D. 257 Hz

    2. Relevant equations

    3. The attempt at a solution

    I got it as 2 HZ
  2. jcsd
  3. Dec 7, 2009 #2


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    Homework Helper

    Probably. Computer generated question?

    The hesitation is because no one can hear 2 Hz.
  4. Dec 7, 2009 #3
    Nah homework question!
  5. Dec 7, 2009 #4
    Is it 2HZ?
  6. Dec 7, 2009 #5
    yes, but I agree with Delphi--two hz is not audible. Beat frequencies are generated by sums and differences of the fundamentals. The only choice which makes sense is 2.
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