an elastic string has a mass M and equilibrium L0 when there is no F on it. In reaction to tension F, it stretches like a spring with a spring constant C. M never changes.

1. ) Find the wave speed for this elastic string under tension F. the answer needs to be in terms of M, L0, F and C

1. Suppose the elastic string is tied at the ends to two posts, and these posts are moved apart, exerting a tension F and stretching the string. Find the allowed frequencies of standing waves, in terms of M, L0, F and C.

1. Show that, as tension is increased to larger values, the fundamental frequency (n=1) of an elastic string levels off to a limiting value, unlike for a regular string.