Magnetically Coupled Pendula

Three magnets arranged to form a coupled pendula. Demo credited to Paul Doherty. Follow up video on this link: http://www.youtube.com/watch?v=cn1ZVuJdwtA

Category:

Education

Tags:

• Physical
• Science
• Demonstration

[snorkellisab]

look like magnets from the magnetron of a microwave oven ... two very strong donut mags are in a magnetron ... worth taking the old microwave apart for them.

[mariachitv]

@snorkellisab these magnets are from radio shack. They are ceramic magnets and not very strong

[theonethatgoofs]

i did this with square magnets and it worked great thanks .

[mariachitv]

@theonethatgoofs cool!

[mariachitv]

sorry, i never replied to your comment. You should use a piece of paper under the magnets. It is important to have some friction under the magnets.

[mariachitv]

Very nice. I think that if the magnets are too strong there is the possibility that they will move.

[ask666999]

yes,  and it worked very fine with magnets taked from the magnetron of microwave ovens... Before it work , ive tried more and more position. After 3 or 4 oscillations , magnets dont maintain position . sorry for my bad bad english

[mariachitv]

did it work?

[ask666999]

great and functionally ! i tried this with 3 magnets from old speakers , same dimension... :)

[pashaahsj]

Nice!