- #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?