# Natural FrequencyWhat does the natural frequency of an object depend on?

1. Jul 1, 2009

What does the natural frequency of an object depend on?

Whenever I try to look this up, I usually read that the natural frequency depends on "intrinsic" properties or a "variety" of factors. Is the natural frequency independent for each object/is there any universal factor the natural frequency depends on?

2. Jul 1, 2009

### maverick_starstrider

No, it's always going to be a complicated function of what the object's made of, its shape, whether it has defects, the temperature, the humidity, etc. Generally it's not feasible to calculate the natural frequency of a real life object it's pretty much always much much easier to just find it experimentally.

3. Jul 1, 2009

Okay thanks for that.

Somewhat unrelated, if you were to, lets say, take a guitar into space. The guitar strings each have their own natural frequency. However if you were to pluck one of the strings, would a frequency (and corresponding wave) be produced? Doesn't sound, which is produced from such an event, require a medium?

--- Nevermind

The object would just vibrate, no wave produced.

Last edited: Jul 1, 2009
4. Jul 1, 2009

### DaveC426913

Yes. The medium is: first the string, then the guitar body. The wave would not, however, propogate beyond the physical confines of the guitar itself without the presence of a medium such as air (or any other mass in contact with the guitar).