A 20.0-m copper wire, with 1.00 mm diameter and density r = 8920 kg/m3 is stretched to a tension of 150 N. How long will it take a transverse wave to travel the entire length of the wire?
The time of travel of the wave is s.
The time t a transverse wave needs to travel the length of the wire L = 20.0 m can be calculated from
The speed of the wave v can be found from
We know the tension t = 150 N and we need to find the linear mass density which can be found from
Here V is the volume of the wire and r is its radius. So,
