Here is a quick sketch of what I want
As you can see the ripped section of the cardboard is submerged and let go by the scientist... I then want it to travel toward and stop, at the place it was torn from originally... One other point to make is that it should not matter where the rip is on the piece of cardboard, I want the attraction to happen automatically and 100% each time if possible... All this is to be done without the use of magnets/other big contraptions. It may be a bit hard to grasp, but thats the idea!
ANY HELP!?