/sci/ - Science & Math » Thread #11962505

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Is gravitational energy infinite?

Owner Sun 02 Aug 03:46:06 2020 No.11962505 View Reply Original Report

Quoted By: >>11962532 >>11962613 >>11962663 >>11962709

Sounds strange.

Why does gravitational energy appear to be infinite? How would you explain it?

Anonymous

Anonymous Sun 02 Aug 2020 03:48:09 No.11962516 Report

Quoted By: >>11962517 >>11962520

what leads you to this conclusion? no, it is not infinite

Owner

Owner Sun 02 Aug 2020 03:49:33 No.11962517 Report

Quoted By:

>>11962516

It's weird because it sounds infinite but I'm sure that it's not. How is this explained by general and special relativity?

Owner

Owner Sun 02 Aug 2020 03:52:29 No.11962520 Report

Quoted By: >>11962539

>>11962516

We are right now being pushed by gravity in direction to the center of Earth. Energy is being added on us. So something is loosing energy, What is losing energy?

Anonymous

Anonymous Sun 02 Aug 2020 03:58:35 No.11962532 Report

Quoted By: >>11962557 >>11962774

>>11962505
Yes. Mass makes gravity but you still need something to move, and you still have to find a way to get it up high. Rain water into a lake dam works well but we exploit the rain cycle. The energy it takes for us to raise and object is never less then the output it can give from gravity’s pull. In vs. out remains constant consideration. Gravity is almost an illusion because it’s a distortion of space.

Anonymous

Anonymous Sun 02 Aug 2020 04:00:12 No.11962539 Report

Quoted By: >>11962557 >>11962809

>>11962520
>We are right now being pushed by gravity in direction to the center of Earth
yes, and the earth is pushing us away with the same amount of force
>something is loosing (Sic) energy
no, nothing is being dissipated since no energy is being expended by just standing on the earth's surface

continue asking questions and I'll answer them

Owner

Owner Sun 02 Aug 2020 04:10:12 No.11962557 Report

Quoted By: >>11962559 >>11962568

>>11962532
>>11962539

This is impossible, something is losing energy. When something from space starts to move against Earth thanks to gravity there is energy being added. This energy comes from somewhere. It can be a magical force...

Anonymous

Anonymous Sun 02 Aug 2020 04:11:19 No.11962559 Report

Quoted By: >>11962564

>>11962557
?
the object moves towards earth
earth moves towards the object
the total momentum of the two bodies remains 0, so no energy was added

Owner

Owner Sun 02 Aug 2020 04:14:13 No.11962564 Report

Quoted By: >>11962569

>>11962559

No dude the body is in constant movement in space than it starts to move faster thanks to the gravitational force.

I'd like to listen to an answer from someone who really understands general and special relativity.

Anonymous

Anonymous Sun 02 Aug 2020 04:15:26 No.11962568 Report

Quoted By:

>>11962557
gravity is not a one way thing

Anonymous

Anonymous Sun 02 Aug 2020 04:15:37 No.11962569 Report

Quoted By: >>11962584 >>11962598

>>11962564
I'm a physics PhD you absolute monkey
you're conflating so many ideas that there's no point in trying to respond

Anonymous

Anonymous Sun 02 Aug 2020 04:18:52 No.11962578 Report

Quoted By: >>11962587 >>11962631

The gravitational potential energy is large but finite. When something starts accelerating (gaining energy) due to the gravity of something else, the something else recieves a corresponding amount of energy with a vector pointing in the opposite direction. This energy is not created ex nihilo, it is taken from the gravitational potential energy field which decreases correspondingly. Total energy is a constant value.
At least in newtonian gravity.
In relativity, total energy is conserved in everything except for changes in the metric volume of spacetime (cosmic inflation) which adds new energy into the system without giving a shit about conservation laws. Extensive observations and calculations over the last century has provided us with an excellent model of how inflation works and exactly what it does numerically, and we can solve any problem involving it mathematically.
The only remaining question is thus: why is there any inflation at all?

Owner

Owner Sun 02 Aug 2020 04:23:22 No.11962584 Report

Quoted By: >>11962588

>>11962569

Your PhD isn't giving me any answer.

Let's use the example of an asteroid that is moving at constant speed then it is passing close to Jupiter. Gravitational force gives it speed but the asteroid doen't touch the planet.

So now the asteroid is in space again moving faster. Something has spent energy making the asteroid moves faster. Agree?

Now where is the energy coming from?

U mad bro?

This force that pushed the asteroid

Owner

Owner Sun 02 Aug 2020 04:24:46 No.11962587 Report

Quoted By:

>>11962578

Good answer.

Anonymous

Anonymous Sun 02 Aug 2020 04:25:00 No.11962588 Report

Quoted By: >>11962599

>>11962584
ay dios mio
just finish first year physics

Anonymous

Anonymous Sun 02 Aug 2020 04:32:25 No.11962598 Report

Quoted By: >>11962608

>>11962569
>I'm a physics PhD
Is gravity truly known to be curvature in spacetime or is that a dumbed down version of what we know?

Owner

Owner Sun 02 Aug 2020 04:33:08 No.11962599 Report

Quoted By: >>11962605

>>11962588

Strange fellow who doesn't answer questions and say that is PhD

I don't give a fuck for your shitty degree, I see you as an inferior being. Now fuck off.

Anonymous

Anonymous Sun 02 Aug 2020 04:34:56 No.11962605 Report

Quoted By: >>11962614

>>11962599
if you've read a highschool physics textbook you'd understand this question. stop shitting up this board and acting like you know anything because you've read introductory wikipedia pages. it's embarrassing and we can see right through you

Anonymous

Anonymous Sun 02 Aug 2020 04:36:15 No.11962608 Report

Quoted By:

>>11962598
Gravity is one of the least understood forces, in the context of other forces. Once we have a unified theory of gravity and QM you'll have a better answer. The curvature is likely correct.

Owner

Owner Sun 02 Aug 2020 04:37:00 No.11962611 Report

Quoted By: >>11962617 >>11962619 >>11962640 >>11962836

Just one guy answered and I still see no point.

Something has lost energy making the asteroid move in example above.

I'd like to listen more answers about the thing that has lost energy.

So it makes the gravitational field weaker?

Anonymous

Anonymous Sun 02 Aug 2020 04:37:57 No.11962613 Report

Quoted By:

>>11962505
potential energy. The closer you get to the center the less potential energy you have. The more you escape the more potential energy.

Now think of this with black holes and you start to get very interesting.

Owner

Owner Sun 02 Aug 2020 04:38:05 No.11962614 Report

Quoted By: >>11962620

>>11962605

Then answer, mongoloid.

Anonymous

Anonymous Sun 02 Aug 2020 04:38:47 No.11962617 Report

Quoted By: >>11962624

>>11962611
nothing has lost energy you absolute mongoloid
read about conservation of energy and stop shitting up this thread

Anonymous

Anonymous Sun 02 Aug 2020 04:39:42 No.11962619 Report

Quoted By:

>>11962611
No, but certain object contain certain potential for work compared to other objects. Based on their position. That's the best way to put it. No energy is exchanged with gravitational fields. I could use a steam engine to propel a ball into the air, I converted heat into potential energy.

Anonymous

Anonymous Sun 02 Aug 2020 04:39:49 No.11962620 Report

Quoted By: >>11962622

>>11962614
total energy is conserved. no energy is "lost" as you claim. I don't know how to answer a question that isn't formulated correctly, you're asserting that energy is being lost where it isn't being lost.

Anonymous

Anonymous Sun 02 Aug 2020 04:40:48 No.11962622 Report

Quoted By: >>11962625

>>11962620
it's just less usable, ala entropy.

Owner

Owner Sun 02 Aug 2020 04:41:34 No.11962624 Report

Quoted By: >>11962627

>>11962617

so is this spontaneous generation of energy? how can a body move faster using a force and this source of force doesn't lose energy?

answer it mongoloid

Anonymous

Anonymous Sun 02 Aug 2020 04:42:01 No.11962625 Report

Quoted By: >>11962630

>>11962622
what the fuck does this even mean

Anonymous

Anonymous Sun 02 Aug 2020 04:43:52 No.11962627 Report

Quoted By: >>11962638

>>11962624
Potential energy -> Kinetic energy
just because something goes faster doesn't mean it generated energy spontaneously. you're really uneducated and at the same time have some kind of complex where you think you know more than you do. it's really strange. stop being so vocal

Anonymous

Anonymous Sun 02 Aug 2020 04:46:06 No.11962630 Report

Quoted By:

>>11962625
https://en.wikipedia.org/wiki/Laws_of_thermodynamics
https://youtu.be/C0fGk1d4oIc
https://en.wikipedia.org/wiki/Rudolf_Clausius

I'm sorry bro you've got terminal reddit ngmi

Anonymous

Anonymous Sun 02 Aug 2020 04:46:08 No.11962631 Report

Quoted By:

>>11962578
Is the expansion constant or accelerating or is slower every other tuesday etc.

Owner

Owner Sun 02 Aug 2020 04:48:01 No.11962638 Report

Quoted By: >>11962646

>>11962627

This force that we are talking about is the gravitational one. Energy comes from somewhere to push the object. The wonder is how can be this force apparently limitless.

Anonymous

Anonymous Sun 02 Aug 2020 04:50:39 No.11962640 Report

Quoted By:

>>11962611
Ah the next crisis to put in the queue
"We're using up all the gravity!"
(Obligatory your-mom joke here)

Anonymous

Anonymous Sun 02 Aug 2020 04:54:17 No.11962646 Report

Quoted By: >>11962650

>>11962638
It comes from the space between protons and neutrons in iron atoms, kinda leaks out like olive oil, but you have to watch out for counterfeit gravity, that's how Weigh Watchers tricks people into thinking they're losing weight, a weaker bootleg gravity is included in the frozen meals

Anonymous

Anonymous Sun 02 Aug 2020 04:56:43 No.11962650 Report

Quoted By:

>>11962646
you're a frozen meal.

https://youtu.be/ykUmibZHEZk

Anonymous

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Anonymous Sun 02 Aug 2020 05:04:48 No.11962663 Report

Quoted By: >>11962671 >>11962673

>>11962505
everythign is connected
with ropes; elongated objects

Owner

Owner Sun 02 Aug 2020 05:09:02 No.11962671 Report

Quoted By: >>11962675

>>11962663

Believe it your answer is better than most of the rest.

Anonymous

Anonymous Sun 02 Aug 2020 05:10:30 No.11962673 Report

Quoted By:

>>11962663
Probably some short ones, too, I reckon'.

Anonymous

Anonymous Sun 02 Aug 2020 05:11:03 No.11962675 Report

Quoted By:

>>11962671
what is light something you cant see a phenomena we call tehm in our world
theres no explanation of phenomena in modern day science, just descriptions. noone explains what causes light or how light works or wht it is.
light is a rope, torque explains light we see, and reelling in the links of the rope explains pull

Anonymous

Anonymous Sun 02 Aug 2020 05:35:34 No.11962709 Report

Quoted By:

>>11962505
I just realized it
Entropy is the decay of gravity. Entropy always rises because if it didn't gravity would be infinite and that can't be the case so entropic decay must exist to prevent it. Entropy is the ultimate antithesis to gravity.

Anonymous

Anonymous Sun 02 Aug 2020 06:14:23 No.11962774 Report

Quoted By:

>>11962532
Gravity is not a distortion of space, that's a mathematical description, an approximation. No one knows what gravity is.

Anonymous

Anonymous Sun 02 Aug 2020 06:16:58 No.11962775 Report

Quoted By:

If I throw and infinite amount of rocks towards a planet, will rocks stop being attracted to it at some point? If that's not the case, it means the gravitational "fuel" is actually infinite.

Anonymous

Anonymous Sun 02 Aug 2020 06:28:34 No.11962790 Report

Quoted By:

Gravity is not energy retard. What’s with retards and thinking gravity and magnetic fields have energy

Anonymous

Anonymous Sun 02 Aug 2020 06:44:05 No.11962809 Report

Quoted By: >>11962826

>>11962539
Are you telling me you can just stand up for an indefinite amount of time and your legs won't have to put any energy into it?

Anonymous

Anonymous Sun 02 Aug 2020 06:52:51 No.11962826 Report

Quoted By:

>>11962809
retarded comparison because you have to expend energy to stand. if you're sitting you don't expend that much energy.

better comparison is a rock doesn't lose any energy by sitting on the floor of the earth.

Anonymous

Anonymous Sun 02 Aug 2020 07:01:21 No.11962836 Report

Quoted By:

>>11962611
Everything has gravitational potential energy, when they accelerate towards eachother, that energy is converted into kinetic energy, no energy is lost or gained.

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