hmmm, if u doubted about perpetual motion machine then u should doubted the earth itself.
have u ever think that how much mass that could be pulled by earth itself ??
how the earth could pull masses? u all know that earth mass does it. it creates force with another mass.
and i think as long as there are mass( the source of force by mass), it could pull as much as possible... or unlimited mass...
means unlimited energy...
the same as magnetic fields. as long as there is magnetic fields, there are also unlimited force.. its only matter how to convert it to electrical energy/ makes system that flows energy..
i've made blueprints of that machine several years ago, but never had time to try it..
