  If the gravitational interaction is unified with the electroweak and strong
interactions at a mass M=10^15 GeV, the evolution of Newton's constant must
differ from its classical (general relativistic) form. We can model such
behavior by introducing an ad hoc dependence on ln(s/4m^2) where s is the usual
cm energy between two protons. We can then predict the observable effects for
relativistic collisions (sqrt(s)~1.4x10^4 GeV) as well as for the case of low
velocity motion (beta^2~10^-5)
