Question: (a) Show that, in a mass-spring chain with two fixed ends, under any external force, the average elongation of the springs is zero: (b) What

(a) Show that, in a mass-spring chain with two fixed ends, under any external force, the average elongation of the springs is zero:
(e, +ยทยทยท+ en+1) = 0.

(b) What can you say about the average elongation of the springs in a chain with one fixed end?

(e, ++ en+1) = 0.

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