this is There are a number of musical instruments (harmonica, accordion, harmoni

Question

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There are a number of musical instruments (harmonica, accordion, harmonium) in which sound is produced by blowing air over small metal "reeds" which are fixed at one end but free to vibrate at the other end. The air blowing over them forces the reeds to vibrate. Draw the longest three standing waves that a metal reed as described above can vibrate in. For a reed of length L, what are the wavelengths of the standing waves that you have drawn in part a)? Which harmonics are the standing waves that you drew in part a)?

Explanation / Answer

lambda/4 = L and 3*Lambda/4 = L

4L and 4L/3

1st and 3rd harmonics

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