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I have a question that I'm not sure how to answer, it goes like this:

A string along which waves can travel in 2.7m long and has a mass of 260g. The tension is 36N. What must the frequency of a travelling wave of amplitude 7.70mm be if the average power transmitted is 85W?

I was going to use the average power question and worked out that the linear density would be 0.96 (or 9.6e-3), but I'm not sure how to go about finding the angular frequency or height of the wave (e.g. y) with the info given in the question or am I going about this in completely the wrong fashion?

Also, where is the equation editor in this forum? I was going to write out the Power equ' but it would look fairly untidy in normal text.

Thanks

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# Homework Help: Frequency of wave on a string

**Physics Forums | Science Articles, Homework Help, Discussion**