# Homework Help: Finding fundamental frequency with length and successive frequencies

1. Nov 5, 2012

### cyclingnerd

1. The problem statement, all variables and given/known data
Standing waves on a 1.3 m long string that is fixed at both ends are seen as successive frequencies of 24Hz and 48 Hz. What is the fundamental frequency?

2. Relevant equations
fo = nv/4L

3. The attempt at a solution
Okay, so I don't really know if that is the right equation, so I can't really see how I'm supposed to solve for this... Please help!

2. Nov 5, 2012

### klawlor419

What do they mean by "are seen as successive frequencies"?

3. Nov 6, 2012

### haruspex

They mean that standing waves can exist on the string at those two frequencies, but at no frequency in between.
cyclingnerd (I could say, fellow cyclingnerd ) how many wavelengths would there be on a string vibrating at its fundamental frequency? How many at successive harmonics?

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