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## Homework Statement

Find the frequency of oscillation of an electric dipole, of dipole moment p and rotational inertia I, for small amplitudes of oscillation about its equilibrium position in a uniform electric field of magnitude E.

Answer: [(pE/I)^0.5]/(2*pi)

## Homework Equations

I think that the relevant equations are τ = I α , τ = pEsinθ , and α is the second derivative of θ

## The Attempt at a Solution

τ = I α

pEsinθ = I d2θ/dt2

Then I don't know where to go on from there. Am I even on the right track? Help?