1) A cable made from a metal of density 8850 kG/cubic meter, and whose cross sectional area is 9.6 cubic mm is pulled to a stress of 103.4 Newtons. One end of the string is oscillated with a frequency 480.1 Hertz. The wavelength of the wave on the string (in meters) is(adsbygoogle = window.adsbygoogle || []).push({});

T=f^2 * linear mass density * wavelength^2

T=103.4 Newtons

linear mass density = 8850 kG/cubic meter

f=480.1 Hertz

so, I plug all those in and got 2.25E-4

but the correct answer is 7.27E-2

The question gave a cross sectional area. How does that relate to the wavelength?

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# Homework Help: String wavelength problem

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