Solutions for Chapter 16 Problem 3CQ
Longitudinal waves move along a slinky at a speed of .It does not mean that the one coil of the slinky moves a distance of 5 m in one second, and speed represents the speed of the disturbance along the spring.
The equation of wave speed is given by the equation
Here, is the linear mass density and it is equal to
From the above relation, we have if the tension force and linear mass density remains constant, then the disturbance will move with constant speed.