Question

A telephone cable is stretched between two poles with a tension force of 6000 N. The cable has a linear mass density of 15 kg/m. What is the maximum speed of a wave on the cable?

Answer 1

The maximum speed of a wave on the telephone cable is 20 m/s.

Step-by-step explanation:

To determine the maximum speed of a wave on a telephone cable, we need to use the equation

v = √(F/μ),

where v is the wave speed, F is the tension force, and μ is the linear mass density of the cable.

Given that the tension force is 6000 N and the linear mass density is 15 kg/m, we can substitute these values into the equation to find the wave speed:

v = √(6000 N / 15 kg/m) = √400 m/s = 20 m/s

Therefore, the maximum speed of a wave on the telephone cable is 20 m/s.