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SLINKY



The speed of a small transverse disturbance along a coiled
spring is v=sqr(T/mu), where T is the constant tension and
mu is the linear mass density. What is the speed of a small
longitudinal disturbance along the same spring? In other
words, what is the relation between the speeds of P waves
and S waves in the one-dimensional case?
Ludwik Kowalski