Bulk Modulus of unknown material

[wowyogurt]

Homework Statement

A extremely strong wire of exotic material has a radius of 0.1 mm and a length of 5 m. A 1000 kg
mass is hung vertically from the wire. The speed of sound in the wire is observed to be the same as
the speed of a transverse wave on the wire. What is the Bulk Modulus of the material? (in N/m2
)

Homework Equations

Speed of Sound in solid: v=√(B/ρ)
B=-ΔP/(ΔV/V)

The Attempt at a Solution

I honestly don't know where to start. All the examples in my text give a change in volume or pressure, which would be simply using Equation 2. I'm assuming you find the density of the wire somehow, but I don't have the mass of the wire. Any guidance would help!

 

[mfb]

You have the tension in the string (assuming this experiment was done on earth), this is related to speed of transversal waves via the (line) density of the material.

 

[wowyogurt]

You have the tension in the string (assuming this experiment was done on earth), this is related to speed of transversal waves via the (line) density of the material.

OHHH. I SEE. I get it now! Thank you!