A small bar magnet having magnetic moment of `9xx10^9Wb-m` is suspended at its
Channel: Doubtnut
Date: 16/08/2020

A small bar magnet having magnetic moment of `9xx10^9Wb-m` is suspended at its centre of gravity by a light torsionless string at a distance of `1m` vertically above a long straight horizontally wire carrying a current of `1A`. Find the frequency of oscillation of the magnet about its equilibrium position, assuming that the motion is undamped. The moment of inertia of the magnet is `6xx10^-9kgm^2`.