Why is gravity thought to be a week force? I would agree that at the surface of our Earth it would appear to be week, after all we can stand on the surface of the Earth without risk of being pulled into it core. But a black hole is another kettle of fish altogether, it's almost an atomic waste disposal unit, ripping atomic structures to shreds! This then brings me to another question does gravity have a maximum value or strength?? Or is it always proportionate to mass... the greater the mass the greater the gravity "exerted"... to infinity??