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/sci/ - Science & Math


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1626940 No.1626940 [Reply] [Original]

I'm assuming that Earth's rotational energy is coming from the creation of our Solar system some billions of years ago.

Will this energy ever die out? Will Earth slowly stop rotating? It can't continue rotating forever, can it?

Yeah I know, inertia, but Earth is still under the affects of gravity from... everything in the universe, so shouldn't that slow it down?

>> No.1626951

Nope, because GOD designed it not to stop

>> No.1626961

Angular momentum is a conserved quantity in any physical system. It won't stop turning.

>> No.1626963

Why do you care? You'll be dead and when you're dead, everything is everything and nothing is nothing and everything is nothing.

>> No.1626968

I thought Sun's gravity will keep us spinning here for a very long time.

>> No.1626975

>>1626961
can you explain angular momentum?
why doesn't gravity slow down a tilted turning planet?

>> No.1626976

>>1626951

LMAO!

>> No.1626988

>>1626975
Angular momentum is basically the inertia of a spinning thing. Any massive spinning thing will keep spinning until some force stops it. There's no real force that's stopping it. Maybe if the earth was less spherical, gravity could slow it down, because it could pull harder and one end rather than the other, inhibiting rotation. But on a spherical object, gravity doesn't do anything about the rotation, since its symmetrical.

>> No.1626993

>>1626963
There is the slim possibility we will still be alive.

>> No.1627004

We will not be around when it becomes an issue. Why give a fuck about it?

>> No.1627016

Time stops when you die so nothing will happen and people won't exist and they will exist and everything will happen.

>> No.1627022

>>1627016
You stupid cunt.

My grandpa died and time is still linear.

Care you an hero?

>> No.1627042

>>1626988
Even though the Earth is spherical, it's not perfect, we do have some bumps.

I'm assuming that is slowing down the Earth's rotational energy

very, very, very, slowly.

Plus with buildings getting bigger and bigger yearly, who knows, maybe that has some sort of effect on gravity as well.

>> No.1627049

>>1627022

You're not G-d, so all you can do is observe. LOL @ humans!

>> No.1627053

Eventually our whole solar system will fall into the black hole at our galaxy's center. Then we'll all keep spinning as one big black hole, until it dissipates.

>> No.1627054
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1627054

>>1627049
the 'g-d' part got me

5.3/10

>> No.1627490

>>1627042
Then it would only make the rotation slow down insignificantly, then increase it as much .

A pendulum wouldn't stop because of gravity.
The energy would need to be converted to something else, so, friction in space, or solar winds would be something that could make the earth change is rotation, but those are miniscule. The sun will die out long before we would ever notice it.

>> No.1627516

We will slow down eventually, but fortunately (or not), not significantly much, because the sun will die on us earlier

>> No.1627522

This is a very naive and rudimentary question but, with the laws of inertia and energy conservation how could the big bang have ever happened? If everything is in a decline, how could we have ever gotten in a high enough position to decline in the first place?

>> No.1627527

>>1627516

IF THE HEAT LIGHTNING ENSUES!

>> No.1627532

>>1627053
The sun will explode long before that happens.

>> No.1627550

>>1627522
Those were just the initial conditions. The beginning of the universe is a state of minimum entropy.

>> No.1627574
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1627574

No external torque with respect the center of mass of Earth assures conservation of momemtum and endless precession. I dont know why nutation angle varies though

Earth is nothing but a fuckhuge rigid body

>> No.1627590

>>1627574

*endless rotation

>> No.1627591

>>1627522
Ask the question in a new thread, respectfully and humbly and you will assuredly get some good explanations

>> No.1627611

The moon and the earth are stretching each other out so they are slightly ob longed shape. This creates tidal friction on both the moon and the earth. This slows down both the rotation of the earth and the moon, the moon being much smaller has already come to a stop (one face of the moon always faces us) Pretty much all the moons in the solar system are like this. Pluto being the only planet that has actually come to a stop, it and its moon are both synced up.

So the earth day is slowly getting longer, but I think its happening so absurdly slow that our sun will explode long before the earth stops rotating.

>> No.1627820

>>1626951
Shockingly accurate. Everything is contrived, meaning it spins just cuz it's supposed to, just as there's a moon to give light at night, weather systems, comet catchers and extra solar travel is near impossible with our bullshit propulsion systems. I don't think anyone who is a science junkie is ever going to make any breakthroughs at the ridiculous level of encapsulation science has reached now. It's sort of like stepping away from the computer makes you more productive. you're asking all the wrong questions.

>> No.1627871

Every gravitational system loses energy in the form of gravitational waves, so in principle the earth will eventually lose all its energy and fall into the sun. This will take a fuck load of time, probably longer than it'll take for the sun to blow up.

>> No.1627888

>>1627574
NOOOO HE's STILL DREAMING AT THE END OF THE MOVIE

>> No.1627895

>>1626951
12/10

>> No.1627907

Finally, perpetual motion.

>> No.1627908

actually Gravitational interactions between the earth and the moon causes the earth to slow down very slightly

It also causes the moon to more away from the earth

>> No.1627930

>>1627574
I've got a fuckhuge rigid body...IN MY PANTS