Frequency of an organ???

Question

http://cache.daylife.com/imageserve/...330tQ/610x.jpg

Based on this picture from the Jehmlich organ manufacturer in Dresden, Germany, estimate the frequency of sound produced by the organ pipe held by the man. Assume that the pipe is a tube open at both ends.

I feel like the formula to be used is Fn=n(V/4L)...I am not sure how to estimate length (maybe 1.5 m based on the size of the person?) And ahve no idea what n would be, or if I am evenusing the right formula...any experts...?

Answer 1

The equation for a pipe which is closed at one end is:

L = (S/F) / 4

Where:

L =  length of the pipe

S = speed of sound,

F = the desired frequency (in Hertz.)

This formula works for cylindrical pipes such as a Pan Flute.

Juggling my formula gives you:

F = S/4L

which looks like the formula you are using.

Do the "n" factors cancel out or is "Fn" a single variable?