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  4. What in spin causes gravity?
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What in spin causes gravity?

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Offline ron123456 (OP)

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What in spin causes gravity?
« on: 04/11/2020 17:59:03 »
Please leave out space time if perhaps possible?..….Why would an object spinning cause a gravitational force?.....Why would spinning cause a force outward or inward?..... 



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Re: What in spin causes gravity?
« Reply #1 on: 04/11/2020 18:05:18 »
Quote from: ron123456 on 04/11/2020 17:59:03
Why would an object spinning cause a gravitational force?
It wouldn't- particularly.
The gravity would be the same if it was spinning or not.
Two rocks will attract each other gravitationally, they don't need to spin.
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Offline ron123456 (OP)

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Re: What in spin causes gravity?
« Reply #2 on: 04/11/2020 18:18:52 »
Yea...but what about all the intrinsic stuff?
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Re: What in spin causes gravity?
« Reply #3 on: 04/11/2020 18:26:38 »
Quote from: ron123456 on 04/11/2020 18:18:52
Yea...but what about all the intrinsic stuff?
What stuff?
You really  need to put more effort into constructing a meaningful question.
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Offline ron123456 (OP)

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Re: What in spin causes gravity?
« Reply #4 on: 04/11/2020 18:47:27 »
I apologize......Why would any atomic particle spinning cause a gravitational force?
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Re: What in spin causes gravity?
« Reply #5 on: 04/11/2020 19:09:13 »
For the same reason that a non spinning one would.
It has mass.
Gravity and spinning are not closely related.

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Offline evan_au

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Re: What in spin causes gravity?
« Reply #6 on: 04/11/2020 19:41:35 »
Quote from: OP
Why would an object spinning cause a gravitational force?
The Sun's gravitational attraction on the Earth would be essentially identical whether it was spinning about once per month (as it does at present), once every 10 hours (as Jupiter does), or not at all.

Spinning objects do produce a very subtle gravitational effect called "frame dragging", which was derived from Einstein's General Theory of Relativity by Lense+Thirring in 1918.

However, the effect is so small that satellite measurements made with the Gravity Probe B satellite in the past 20 years were not accurate enough to detect the effect reliably.

See: https://en.wikipedia.org/wiki/Frame-dragging#Experimental_tests
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Offline Halc

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Re: What in spin causes gravity?
« Reply #7 on: 04/11/2020 19:48:12 »
The source of gravity is a function of energy/mass, so a spinning wheel (or a warmer one for that matter) technically has more energy than does the same wheel not spinning, and hence exerts more gravity if you go to enough decimal places.

This is a very naive description, and the actual frame invariant gravitational field is computed via a tensor, which you probably don't want to hear about if we're to avoid mention of spacetime.
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Offline ron123456 (OP)

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Re: What in spin causes gravity?
« Reply #8 on: 04/11/2020 20:19:04 »
I will give it a go if you are patient....Please inform...thx Halc

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Offline Kryptid

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Re: What in spin causes gravity?
« Reply #9 on: 04/11/2020 22:44:01 »
Quote from: ron123456 on 04/11/2020 17:59:03
Please leave out space time if perhaps possible?

Why?
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Offline alancalverd

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Re: What in spin causes gravity?
« Reply #10 on: 04/11/2020 22:46:14 »
Make sure you aren't as confused as Eric Laithwaite about angular momentum - a whole different thing. The man was an engineering genius with a blind spot about physics - most unusual.
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Re: What in spin causes gravity?
« Reply #11 on: 04/11/2020 23:13:00 »
Quote from: alancalverd on 04/11/2020 22:46:14
Make sure you aren't as confused as Eric Laithwaite about angular momentum
He wasn't the only one.
https://www.thenakedscientists.com/forum/index.php?topic=80717.msg610421#msg610421
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Offline ron123456 (OP)

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Re: What in spin causes gravity?
« Reply #12 on: 06/11/2020 18:49:11 »
Mass has to have a reason to cause the force of gravity.....Yes gravity is an intrinsic property of mass.....But, basically what makes gravity a function of mass?.... Does spin of the total atomic internal particles of each atom contribute to gravity?  Space time is bewildering still and that is why I tried to leave it out at this time...That is basically my question...thx again
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Re: What in spin causes gravity?
« Reply #13 on: 06/11/2020 18:56:07 »
Quote from: ron123456 on 06/11/2020 18:49:11
Mass has to have a reason to cause the force of gravity
Says who?
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Offline ron123456 (OP)

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Re: What in spin causes gravity?
« Reply #14 on: 06/11/2020 19:10:08 »
Do you believe that gravity just occurs magically with a constant?....no way!!...I don't think?...but what else is new?
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Re: What in spin causes gravity?
« Reply #15 on: 06/11/2020 19:40:47 »
Quote from: ron123456 on 06/11/2020 19:10:08
Do you believe that gravity just occurs magically with a constant?
The universe doesn't care what you or I believe.
But that's what the experiments show.
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Offline Kryptid

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Re: What in spin causes gravity?
« Reply #16 on: 06/11/2020 20:45:25 »
Quote from: ron123456 on 06/11/2020 18:49:11
Does spin of the total atomic internal particles of each atom contribute to gravity?

Nope. The spin of a nucleus is unrelated to its mass (and therefore its gravity). Let's use iron as an example. Iron-58 is heavier than iron-57, which is heavier than iron-56. Iron-56 has a spin of 0, iron-57 has a spin of 1/2, and iron-58 has a spin of 0. So there is no correlation.
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Offline ron123456 (OP)

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Re: What in spin causes gravity?
« Reply #17 on: 07/11/2020 20:48:36 »
…..I think that this leads to gravitons....
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