Hmmmmm... True, let's take it slower. F = MA A = F/M A = 4,152,000/546,720 A = 7.594381036 Gs = A/9.8 Gs = 0.77493684041
Maybe I got the numbers wrong. As it turns out, I took the force for the booster rocket alone and used the mass of the ENTIRE rocket assembly, which is comprised of two boosters plus the main stage, all having 4.15 meganewtons of thrust...so we have three times the force, which makes all the calculations 3 (or more, if exponential) times bigger. You get the idea though.
