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Mechanical free energy devices => mechanic => Topic started by: veproject1 on December 08, 2014, 12:19:23 AM

Title: Roberval Balance
Post by: veproject1 on December 08, 2014, 12:19:23 AM
Only the sharp end of the pin hurts. Why?
https://www.youtube.com/watch?v=ypbof1hXPLg  video