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Robin Hooper
#1
Apr15-11, 12:55 PM
P: 9
Hello everyone, curious about something here.

I saw a demonstration lately were a magnet was dropped down a copper pipe and the magnet dropped very much slower than expected. What I got to thinking was, if you replaced the copper pipe with the same quantity of insulated copper wire in a closed loop configuration and compared the fall rate to an open loop setup. Would the magnet fall slower in a closed loop than the open loop setup? My intuition would say that the closed loop coil would farther reduce the fall rate because you now have electron flow(current) which would setup its own magnetic field adding to the resistance of the copper wire.

Thanks
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