This is a video of an object levitating using a +ve charge from a Van DeGraff generator:
All electrostatics experiments described in standard
physics textbooks only mention finding the force between oppositely charged objects and never between a charged and neutral
object. If the mechanism behind the attraction is dielectrophoresis, then it has been calculated that the force relationship should
be 1/r3 which is different from gravity which should be 1/r
2.
However, calculations cannot replace physical experiments. Dielectrophoresis still depends on charges separating within large
molecules. Since gravity is directly related to mass, the electrostatic force would have to work on the individual dipoles contained within each atom. If the hypothesis that gravity is caused
by the electrostatic force is true, then a prediction of this hypothesis is that you would observe a 1/r^2 force which depended
only on the mass of the neutral object. This is an actual experiment which could be performed to confirm this hypothesis."
Have you seen any experiments on that shows the decay of electrostatic force between a +ve charged object and a neutral one decays at 1/r^2 and proportional to only the mass of the neutrally charged object? You say an actuall experiment can be performed - any reference to this?
regards,