- #1

gators1223

- 1

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## Homework Statement

Two positive charges +Q are affixed rigidly to the x-axis one at x = -d and the other at x = +d. A third charge +q of mass

*m*which is constrained to move only in the x-axis is displaced from th eorigin by a small distance s << d and then released from rest. Show that q+ will execute simple harmonic motion and determine the oscillation period T.

## Homework Equations

Coulomb's Law F=kQ

_{1}Q

_{2}/r

^{2}

*possibly something else to relate this to SHM*

## The Attempt at a Solution

I found the force from coulomb's law, F= -4kQqs/d

^{3}

but i really don't know how to relate this to SHM so i can derive an equation for period.