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Hello! How are you guys? Im continuing my second year here at PSU and am exited to begin another physics class. Ive been looking over some basic magnetics stuff and came upon a "Fun with Magnets" video while searching the net. The video can be found at the following link: http://www.youtube.com/watch?v=AaXglgoF2eg It was one of several videos that I found while I was searching for some basic magnetism kits, but I found this one the most interesting. Id like to try and make one for a demonstration, and it looks simple enought to build (the creator says it uses permanent magnets), but im still trying to figure out exactly how the magnets are configured to make the cylinder magnet follow the shape of the arc. I was wondering if you guys had any ideas? Thanks a lot and have a great day!
Answer 1:

Well, as I predicted would happen, you are now out of my league. Duplicating that video's trick is more of an engineering problem than a physics one, but at a glance it looks to be a fairly complicated setup, and I definitely do not know enough about magnets or, in particular, mechanical engineering involving magnets, to be able to help you. I would ask your physics TA, and have him direct you to somebody doing experiments involving magnets (particle accelerators, maybe? Although they use electromagnets, not static magnets). I'm sure Penn State has somebody who does that!

Good luck!


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