 #1
lola1227
 25
 7
 Homework Statement:
 An air column, closed at one end has a fundamental (lowest frequency) of 400Hz. What are two other frequencies that produce resonance with this air column? (This is a difficult problem when no air column length is given. Try to find a way to get around the problem.)
 Relevant Equations:

V=f(lambda)
Closed Air Column Fractions  1/4, 3/4, 5/4
So, my thinking was that we use the formula
V=f(lambda)
and substitute the f so,
V = 440(lambda)
but then i don't have another number to cancel or rearrange by.
And since closed air columns have the fractions of 1/4, 3/4, and 1 1/4 (5/4), we could divide by those?
V=f(lambda)
and substitute the f so,
V = 440(lambda)
but then i don't have another number to cancel or rearrange by.
And since closed air columns have the fractions of 1/4, 3/4, and 1 1/4 (5/4), we could divide by those?