Question

An open organ pipe is 1.6m long. If the speed of sound is 343m/s, what are the pipes: a) fundamental , b) 1st overtone , & c) 2nd overtone ?

Answer 1

a) 107.1875 Hz

b) 214.375 Hz

c) 321.5625 Hz

Step-by-step explanation:

L = length of the open organ pipe = 1.6 m

v = speed of sound = 343 m/s

f = fundamental frequency

fundamental frequency is given as

`f = (v)/(2L)`

inserting the values

`f = (343)/(2(1.6))`

`f = (343)/(2(1.6))`

`f = 107.1875` Hz

b)

first overtone is given as

f' = 2f

f' = 2 (107.1875)

f' = 214.375 Hz

c)

first overtone is given as

f'' = 3f

f'' = 3 (107.1875)

f'' = 321.5625 Hz