1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Another Beat Frequency Question

  1. May 16, 2006 #1
    I have another beat frequency question. I understand how to get the possible frequencies of a string or tuning fork, but I don't know how to determine which one is the original frequency.

    When a guitar string is sounded against a 440 Hz tuning fork, twelve beats are heard in two seconds.
    a) What are the possible frequencies of the string?
    b) If the person tightens the string, the beat frequency decreases. What then is the original frequency of the string, and why?
  2. jcsd
  3. May 16, 2006 #2
    So, I assume you know [itex]\#beats = |f_1 - f_2|[/itex]:

    Since the beat frequency decreases [tex]f_1[/itex] and [itex]f_2[/itex] must approach each other. If this is the case, which one would you pick?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Another Beat Frequency Question