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Fundamental Frequency

  • Thread starter jhayes25
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  • #1
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My question goes as follows:

An open pipe in air is designed to produced 2 successive harmonics at 235 Hz and 275 Hz at 20 degrees Celsius.
What is the fundamental frequency?
What is the length of the pipe (m)?

I'm not sure how to solve this problem, as I can't find the equation to properly relate the information I have. Would you use Frequency=V/2L?
 

Answers and Replies

  • #2
Shooting Star
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I'm not sure how to solve this problem, as I can't find the equation to properly relate the information I have. Would you use Frequency=V/2L?
Have you understood how the above relationship is derived? If you have, then by increasing the number of nodes formed within the pipe, you can derive the general formula for any harmonic.
 
  • #3
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I'm not sure that I understand the relationship you are talking about. How do you relate the successive harmonics?
 
  • #4
Shooting Star
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I'm not sure that I understand the relationship you are talking about. How do you relate the successive harmonics?
Have a look at http://hyperphysics.phy-astr.gsu.edu/hbase/waves/opecol.html" [Broken] first.
 
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