Where does magnetic putty get its energy from?

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Offline thedoc

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Where does magnetic putty get its energy from?
« on: 02/05/2013 04:30:02 »
Kevin Hoover  asked the Naked Scientists:
   
When magnetic putty absorbs an object, mechanical action occurs. Where does the energy for this activity come from?

http://www.youtube.com/watch?v=LcQ3GWpy22Y&feature=player_embedded

What do you think?
« Last Edit: 02/05/2013 04:30:02 by _system »