Waves frequency and mass?

  • Thread starter bobby3280
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  • #1
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Homework Statement



The longest "string" (a thick metal wire) on a particular piano is 3.0 m long and has a tension of 300.0 N. It vibrates with a fundamental frequency of 27.4 Hz. What is the total mass of the wire? ( in kg)

Homework Equations



The only relevant equation I could find is v = square root of ( FL / m )
or the linear mass density equations

The Attempt at a Solution



I move m to one side leaving m = FL / v^2 and tried velocity of sound 343 m/s but no luck.

This seems to be the only viable equation to me and I either don't know how to convert 27.4 Hz to velocity or am completely lost.

Thanks for any help
 

Answers and Replies

  • #2
OlderDan
Science Advisor
Homework Helper
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What equations do you have for the frequency of a string under tension?
 
  • #3
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Thanks found the equation and answer.
 

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