Question

a bar magnet and a second object are hung from metal rods. the diagram below shows what happens when both objects are released. which best describes the object on the right? an iron bar a steel bar a bar magnet with its north pole on the left a bar magnet with its south pole on the left

Explanation:

Magnets have north and south poles. Opposite poles attract. Since the left - hand magnet's north pole is attracted to the right - hand object, the right - hand object must be a bar magnet with its south pole on the left. Iron and steel bars would be attracted to either pole of a magnet, but the specific attraction behavior here indicates a bar magnet with a specific pole orientation.

Answer:

a bar magnet with its south pole on the left