# Determine the frequency of a standing wave with Young´s modulus?

Note: This is a laboration assignment.

## Homework Statement

I want to theoretically determine the frequencies of the standing waves that occurs in a Chau gong when exposing it to a camera flash (Nikon sb-900) from a given distance. These shall then be compared to the frequencies obtained from the spectral analysis of a oscilloscope connected to a sound intensity meeter.

Diameter of the Chau Gong (or tam-tam according to wikipedia) can be measured as well as the distance between the flash and chau gong. The energy, effect and burn time of the flash are known.

## Homework Equations

My handler wants me to use some relationship between Young´s modulus and the frequency and/or wavelength of the standing wave.

## The Attempt at a Solution

What I can think of is lambda*f = v, where v is the wave's propagation velocity, lambda the wavelength and f the wave's frequency. The speed of sound is known as well as the diameter of the Chau Gong hence the wavelengths of the standing waves are known?

I guess I just don't know how to relate Young´s modulus to my assignment?!

I've searched a lot the last couple of days to find some insight in how to proceed but with no results. Hopefully someone here have some idea how to figure this out?

## Answers and Replies

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Is there no one who have an idea? :(