A Show The Speed Of Longitudinal

(a) Show that the speed of longitudinal waves along a spring of force constant k is v = √kL/μ, where L is the unstretched length of the spring and + is the mass per unit length.
(b) A spring with a mass of 0.400 kg has an unstretched length of 2.00 m and a force constant of 100 N/m. Using the result you obtained in (a), determine the speed of longitudinal waves along this spring.

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