Is it true that Gravity is the weakest force in Physics?
It depends how you think. On a per particle basis, yes, it is the weakest. The typical example is hey look, this little magnet can defy the gravity of the whole earth. Also the forces holding the nucleus of the atom together are huge. But gravity is the only force that is unbalanced and acts over large distances. The range of nuclear forces can barely makes it outside the nucleus. Electromagnetism, in theory, can act at a distance. But charge in the universe is balanced. (I’m excluding EM waves from this discussion) But gravity is the primary actor over large distances. Gravity is what makes this universe — the stars, the planets, the galaxies — the way they are. Nothing else does. So on a macro-human scale, gravity is the most powerful force cause everything else on this scale amounts to nothing.
