Two positive charges +Q are affixed rigidly to the x
Chapter 21, Problem 21.19(choose chapter or problem)
Two positive charges +Q are affixed rigidly to the x axis,one at x = +d and the other at x = d. A third charge +qof mass ra, which is constrained to move only along the x axis,is displaced from the origin by a small distance s d andthen released from rest, (a) Show that (to a good approximation)+q will execute simple harmonic motion and determinean expression for its oscillation period T. (b) If these threecharges are each singly ionized sodium atoms (q = Q = +e)at the equilibrium spacing d = 3 X 10-10m typical of theatomic spacing in a solid, find T in picoseconds.
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