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standing waves again! :P

Sarahisme
in Classical Physics

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hey i am not sure if i have done this problem right.... as i have not used either of the bits of given information about p = 1 and at what lengths the resonance occurs at :S

 

well anyway, heres my answer, what do you think?

Picture 3.png

  • Author

oops sorry the problem! here it is.... (sorry about the blurriness)

Picture 4.png

You need to fit the distances to a harmonic scale based upon wavelength, establish which harmonics the resonances are, (ie. 2nd, 3rd harmonic etc.), and try to show that the frequencies are irreducable whole number ratios. Then you can establish the fundamental pitch. The vibrating tuning fork is a clue, but not an absolute indicator of the root fundamental (harmonic = 1) of the complex waveform from the tube. All the tuning fork indicates is that the fundamental frequency must be some whole number ratio equal to or below the natural resonance of the fork.

  • Author

yes but i think my way works aswell.... i think there are 2 ways to solve this problem....

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