How difficult to rub somebody if they invent perpetual motion?

Perpetuum mobile on reviews of Energy: christo4_99 question ? How hard to rub someone if they are constantly in motion invent I think if someone invents a perpetual motion machine (I think I am about this very thing) as I want it hard for the opponents of the (historical and new)? And besides, this particular kind of perpetual motion will also be able to perform meaningful work in contradiction to most people's opinions and not be stopped by friction from its own poids.Meilleure response:

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