# Fundamental Frequency.

## Homework Statement

a flexible wire is 80 cm long has a mass of 0.40g. It is stretched across stops on a sonometer that are 50 cm apart by a force of 500N. Find the fundamental frequency with which the wire may vibrate. If it vibrates in 2 third overtone, what is it's frequency?

## Homework Equations

$$f=\frac{1}{2L}\sqrt{\frac{T}{\frac{m}{L}}}$$

## The Attempt at a Solution

I don't kno where to start. I substituted all the given data. And i'm not really sure about my answer.

I can't decide what length should be used in the equation. the problem states the total length of the wire and the length of the wire which is streched on the sonometer.

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