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/sci/ - Science & Math


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2319932 No.2319932 [Reply] [Original]

Simple question:

Why is gravity so weak that even the smallest magnet could beat earth's gravitational force and pull a scrap of metal from the ground?

Also why is gravity so strong that Earth orbits the sun?

>> No.2319938

bumpan

>> No.2319943

Why is gravity weak compared to small magnets we have?
>magnets
>comparing man made magents with natrual magnets
>not dealing at all with comparison to size, seeing as one keeps paper clips together and another keeps the planet rollin'

>> No.2319947

Gravity is proportional to the size of the object. The sun is massive so it puts out a massive amount of gravity. The blackhole that the sun orbits is even more massive.

>> No.2319952

No reasons. Gravity is what it is. If it were a little weaker, Earth would just have to orbit a little closer to the sun is all.

>> No.2319960

>>2319943

Replace magnet with my arm muscles.

Same shit.

Doesn't answer the question.

>> No.2319969

>>2319947

That's another thing that bugs me.

I think density's more important than size when it comes to gravity.

How's a black hole that's millions of times smaller than a star could be so dense and strong that not even light could escape from it?

>> No.2319993

Gravity is a very weak force when viewed close up, but yet is the only force you can really see acting when you look at the grand structures of the universe. Why? Because there is no "antigravity". E&M has + and -. Huge numbers of like charged particles don't generally coalesce (because they repel each other). Gravity is only attractive.

>> No.2319999

>>2319969
Density is a better description than size, because it is somewhat closer to saying more matter. Not quite right though. Its about mass, not size or density.

>> No.2320039

>>2319993

>Thinks gravity is only positive.

laughinggirls.jpg

>> No.2320045

String theory holds the answer amirite?

>> No.2320047

>>2319969
Gravity is not about size nor density. It's about mass.

>> No.2320073

>>2320039

Hmm?

Im talking about force here. There is no force that repels matter from other matter based solely on mass. Otherwise you wouldn't have galaxies, stars, or planets.

>> No.2320071

no one knows the answer.that crippled motherfucker spent his entire life looking for the answer and guess what

there's no answer, only some theories

>> No.2320082

>>2320073

Gauge particles might account for the "force".

I'm not a physicist, nor have I studied enough into physics to know what I'm talking about.. but gauge particles might be the invisible force.

>> No.2320083
File: 2.26 MB, 1920x1200, earthoversun.jpg [View same] [iqdb] [saucenao] [google]
2320083

>>2319932
This is the earth compared to the sun.
The sun is pretty fucking monstrous.
See >>2319947.

>> No.2320091

>>2319960
only if some were actual muscles and others synthetic ones

>> No.2320097

>>2320083

Maybe I asked the question in a wrong way.

Check this:

If all four fundamental forces were once unified and equal, why is gravity so much weaker than the other three forces?

>> No.2320099
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2320099

>>2320073
>There is no force that repels matter from other matter based solely on mass

so it's like this, only without the S ones?

>> No.2320125

>>2320097

NEED ANSWERS NAO

>> No.2320126

>>2320099

N's would repel each other. Its just attractive.

>> No.2320131
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2320131

>> No.2320132

>>2320097

They gave you the answer. People don't fucking know. Lots of theories. One I read about a while ago is that it is much stronger in some other dimension, and we just experience what little leaks through to ours. Not a very scientific explanation, I realize, but I read it a long time ago and I don't have anything better.

>> No.2320135

>>2320125

Science isn't the why, it's the how.

That's just how gravity is. Deal with it.

>> No.2320146

Protip:
lh2 inverse functions of the form (1/r)^a.

>> No.2320175

>>2320083

I always thought it was bigger.

To be honest the sun looks like a giant pussy