Algodoo

See http://www.algodoo.com/algobox/details.php?id=95611 to learn how to make them.

Although they don't behave 100% like magnets do IRL, they get pretty close. Like magnets IRL, same poles repel and opposite poles attract.


The exact values for the attraction parameters can be increased or reduced, but it seems the 100/150 proportion works best.

It seems there might be some issue with rescaling sometimes, so make sure you create them already the size you want.