Chapter 2: Q76CP (page 543)
Longitudinal Waves on a Spring. A long spring such as a is often used to demonstrate longitudinal waves. (a) Show that if a spring that obeys Hooke’s law has mass m, length L, and force constant k′, the speed of longitudinal waves on the spring is
(see Section 16.2). (b) Evaluate v for a spring with m = 0.250 kg, L = 2.00 m, and k′ = 1.50 N/m.
Short Answer
a) We have made use of the principle that states that the impulse equals the change in the momentum to reach the result. b) v =4.9m/s