1. The problem statement, all variables and given/known data Explain how you would determine which was the north pole of a bar magnet, without using any other magnet. 2. Relevant equations none 3. The attempt at a solution If it's small enough you might be able to make it into a compass like object but if its heavy than the magnetic field of the earth is not strong enough to deflect it. So this might not be 100% correct answer. The answer should encompass all sizes of magnets.