1. Magnetic force: The most common type of force exerted by a magnet is the magnetic force. This force is attractive or repulsive, depending on the poles of the magnet and the material of the non-magnetic object. For example, the north pole of a magnet will attract the south pole of a non-magnetic object, while the south pole of a magnet will repel the south pole of a non-magnetic object.
2. Gravitational force: Magnets also exert a gravitational force on non-magnetic objects. This force is always attractive and depends on the masses of the magnet and the non-magnetic object. The gravitational force between a magnet and a non-magnetic object is usually much weaker than the magnetic force.
3. Electric force: Magnets can also exert an electric force on non-magnetic objects. This force is only present when the magnet is moving relative to the non-magnetic object. The electric force between a magnet and a non-magnetic object is usually very weak.
4. Nuclear force: Magnets do not exert a nuclear force on non-magnetic objects. The nuclear force is only present between protons and neutrons in atoms.
