# Explain why the magnets move towards eachother in this setup

I have two bar magnets (actually stacks of small magnets, but I believe they should behave the same) attached to a stack of (presumably conductive) coins, and not diametrically opposite. When I rotate one bar, the coins rotate based on height (corresponding to the rotation on the part of the magnet they are touching) and the second bar magnet rotates in the same direction as the first. However, the magnets also move around the stack of coins towards each other, which I can't explain. This occurs regardless of the direction of rotation or which magnet is being rotated, etc..

When the magnets start opposite each other, this does not occur.

EDIT: if instead force is applied only to the top coin while the bottom one is held still, the same occurs.

• if you do not rotate but just touch the magnets to the coins, do they stay at rest or go towards each other? from the poles you draw there should be attractive forces. – anna v Apr 20 at 6:09
• They stay at rest. – The Zach Man Apr 20 at 15:15