# Standing Waves: Vibration of stretched string and organ pipe

A vibrating stretched string has length 38 cm, mass 25 grams and is under a tension of 30 newtons. What is the frequency to the nearest Hz of its 3rd harmonic?

If the source of the wave was an open organ pipe of the same length as the wire, what would be the frequency of the 2th harmonic?

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#### Solution Preview

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Waves and Sound

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(a) A vibrating stretched string has length 38 cm, mass 25 grams and is under a tension of 30 newtons. What is the frequency to the nearest Hz of its 3rd harmonic?

Answer

The frequency of fundamental vibration or forst harmonic of a streached string is given by the formula

where l ...

#### Solution Summary

Two problems related to the standing (stationary) waves in stretched strings and organ pipe are solved.