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Homework Statement
5.10m, 0.733kg wire is used to support two uniform 230N posts of equal length. Assume that the wire is essentially horizontal and that the speed of sound is 344m/s. A strong wind is blowing, causing the wire to vibrate in its 7th overtone.
What is the frequency of the sound this wire produces?
Homework Equations
fn=nv/2L
v=sqrt(F/linearmass)
sumF=0
The Attempt at a Solution
-split the force vectors into their components
-multiplied the force along the x-axis from one of the posts by two to find the tension in the string
-used this value to find velocity
-used velocity to find the frequency of the 7th overtone
-got answer wrong
help?