Quote:
Originally Posted by Face
Think of the force applied vs typical volume needed to apply it.
As a really simple and crude demonstration magnetism for example, two magnets need to be pulled apart, two stones of a similar size don't.
Or how the gravitational attraction between electrons and protons is completely negligible compared to electrical attraction.
Which is why gravity is labled a weak force, in comparison to the other fundamental forces (at short ranges).
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All true. Perhaps my question could be more delicately formulated, but the reason I asked Neapolitan was because I was curious as to why he thought of the weakness of gravity as interesting when it comes to black holes from dying stars because in those cases, the mass of the object is so immense that the gravitational pull it exerts is anything but weak.
And I guess I wanted to make the point that for the star - the energy needed to push its stuff outwards will eventually leave it, but gravitation won't. Well, okay, it shoots matter off into space, but essentially, gravity would still have to "win" sooner or later.