A picture of the problem can be found here: https://gyazo.com/a92447dcfebed53d4cbd12fc94300d9c[/B]
So, I've already finished part A. For part B, I'm trying to figure out how to equate the two with mass on either side of the equation so that I can solve for it.
The Attempt at a Solution
Transverse wave speed = SQRT(tension/u), substitute (p*pi*d2 / 4)for mu since I don't have it -> V = SQRT(4T/p*pi*d2) where T is tension and p is rho.
Now I need to find a formula for speed of longitudinal wave that includes mass so that I can equate the two velocity formulas and solve for mass.
Any advice is much appreciated!