Question

What is the velocity of the wave in a guitar string having a length of 0.65m and a mass of 3.5g when subjected to a tension of 250N?

Answer 1

Given:

$L=0.65\:\rm m$

$m=3.5*10^{-3}\:\rm kg$

$T=250\:\rm N$

The velocity of the wave in a guitar string

$$v=\sqrt{\frac{T}{m/L}}=\sqrt{\frac{250}{3.5*10^{-3}/0.65}}=331\:\rm m/s$$