Why is Gravity Weak? Understanding the Fundamental Forces and Magnetism

[TimeRip496]

Why am I able to repel two liked poles magnet despite the presence of Earth gravity? The Earth gravity is able to hold skyscrapers together but yet unable to prevent two magnets from repelling?

I know there is an explanation that says that unlike graviton, all the other fundamental forces are bound to the brane. Thus gravity is able to propagate into other dimensions resulting in what we experience the weaker gravity force.
I don't really get this but is there other way to explain?

 

[rootone]

There is a very similar current thread that you might want to look at.
https://www.physicsforums.com/threads/why-do-we-believe-gravity-to-be-a-weak-force.822059

Don't count on brane theory as having anything to with it, or any other theory involving higher dimensions.
Mathematical models of that sort exist but have not been experimentally verified in any way.

We don't yet know why the fundamental forces are different in magnitude, it's work in progress.

Also gravity is not the main force involved in keeping a skyscraper together, electrostatic bonds between atoms do that.
If you somehow teleport the skyscraper into interstellar space it will not suddenly disintegrate.

 

[russ_watters]

Best answer from the other thread:

If you take two protons, the electrostatic repulsion between them will be some 1040 or so times stronger than their gravitational attraction. Gravity becomes significant at large scales only because the positive and negative electric charges cancel one another out, while gravity always adds.

In other words, in a universe full of only protons, or with stars made of protons and planets made of electrons, electromagnetism would dominate. But since the universe has a near equal number of protons and electons, those forces cancel out over very short distances whereas gravity always adds.

 

[Drakkith]

A number of off topic posts and replies to these posts have been deleted. I remind all members to please stay on topic.