The magnetic forces on a magnet are strongest at its poles, which are located at the two ends of the magnet. These poles are known as the north pole and the south pole. At these points, the concentration of magnetic field lines is the highest, which is why the forces are more intense. This is where a magnet will most effectively attract ferromagnetic materials like iron, nickel, or cobalt. The middle portion of the magnet has a weaker magnetic effect because the field lines are more evenly distributed and cancel out. This phenomenon is consistent for all types of magnets, from bar magnets to horseshoe magnets.
