A 5.00-m, 0.732-kg wire is used to support two uniform 235-N posts of equal length (see figure). Assume that the wire is essentially horizontal and that the speed of sound is 344 m/s. A strong wind is blowing, causing the wire to vibrate in its 7th overtone. What are the frequency and wavelength of the sound this wire produces?
at 7th overtone: L= 8(lamda/2)
The Attempt at a Solution
lamda = (2/8)L = (2/8)(5) = (5/4) m
Is my wavelength correct?
I'm not sure of which equation to use to find the frequency.