A small magnet of moment `4.8 xx 10^(-2) ` J/T is suspended freely in the plane of a uniform magnetic field of magnitude `3 xx 10^(-2)` T. If the magnet is slightly displaced from its stable equilibrium and released then the angular frequency of its oscillations in rad/sec. (Moment of inertia of the magnet about the axis of rotation is ` 2.25 xx 10^(-5) kgm^2`)

Explanation

Angular frequency `, omega=sqrt((MB)/(I))`
`= sqrt((4.8 xx 10^(-2) xx 3 xx 10^(-2))/(2.25 xx 10^(-5)))`
`= 8 " rad "s^(-1)` .