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## Homework Statement

**A.**A string with a mass density μ = 4.10×10-3 kg/m is under a tension of F = 327 N and is fixed at both ends. One of its resonance frequencies is 742.0 Hz. The next higher resonance frequency is 1113.0 Hz. What is the fundamental frequency of this string?

**B.**Which harmonic does the resonance frequency at 742.0 Hz correspond to? (i.e. what is n at this frequency?)

**C.**What is the length of the string?

## Homework Equations

## The Attempt at a Solution

So for

**A.**I wanted to use the equation...

FF = 1/2L * sqrt(T/μ)

FF - fundamental frequency

Where...

μ = 4.10×10-3 kg/m

T = 327N

but I don't know what L is?