Consider two magnetic dipoles m1 and m2 separated by a distance r. Show that if the angle between m1 and r is fixed at θ1 but the angle between m2 and r (θ2) is allowed to vary then the equilibrium position is given by tan(θ1) = ± 2tan(θ2)

Don't worry about the ±, just get one or the other.

Want an answer?