The pole strength of a bar magnet is defined by where is
Chapter , Problem 72(choose chapter or problem)
The pole strength of a bar magnet is defined by where is the magnetic moment of the magnet and is the position of the north-pole end of the magnet relative to the south-pole end. Show that the torque exerted on a bar magnet in a uniform magnetic field is the same as if a force is exerted on the north pole of the magnet and a force is exerted on the south pole.
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