If a bar magnet is hung from a string, in which direction does its north pole point?

When a bar magnet is suspended freely from a string, it aligns itself with the Earth's magnetic field.

The Earth behaves like a giant magnet with its magnetic poles situated near its geographic poles. The magnetic pole near the geographic North Pole is magnetically a south-type pole, and the magnetic pole near the geographic South Pole is magnetically a north-type pole.

According to the fundamental law of magnetism, opposite magnetic poles attract each other, while like poles repel. Therefore, the north-seeking pole (commonly called the North Pole) of the suspended bar magnet is attracted to and points toward the Earth's geographic North Pole (which acts as a magnetic south pole).

Thus, the North Pole of a freely suspended bar magnet points in the geographic North direction.