Hi guys i heard you are smart. Recently during shower i was thinking

Yes it would float.
Happy now ?

>>8264006
I dont know man. any proofs it wouldnt fall or spin

Just coz. For reference, the mass of the earth is not evenly distributed. Oddly, fluid mechanics is developing only because the food and chem industries need better methods of even distribution of ingredients.

So, no, your ring would crash to earth. Gravity is not constant, I forget by how much, the gravitational centre of the earth is off by.

>>8264011
It will fall on one side and stay there. And once its fallen on one side, that side will be closer to the earths core and the other side will be awayer so it will remain that way.

>>8264001
If your planet and ring were both perfectly symmetrical and there were no outside forces, the ring would float. Any disturbance would cause it to shift and collide with the surface.

>>8264043
>didn't read the OP which specified a perfectly uniform sphere

>>8264001
>without mountains or other stupid shit

File: maxresdefault.jpg (80KB, 1404x999px) Image search: [Google]

80KB, 1404x999px

You can do this in small scale with a magnetic cylinder and iron ring.

>>8264060
It wouldn't fall if the ring were a precise uniform distance from the earth all the way around.

>>8264001
it's unstable:
http://physics.stackexchange.com/questions/41254/why-is-larry-nivens-ringworld-unstable

>>8264001
>if it goes down on one side does it floats on other part of the planet?

Very Yes.

>>8264001
>if it goes down on one side does it floats on other part of the planet?

>Very Yes.

Unless it breaks.

More interesting point. The centre of mass and your ring's centre of mass are the same point if the ring is equidistant at every point of the perfect sphere. Does this mean there's infinite force using
F=GMm/r as r is equal to 0?
I get that there's the assumption that the distance is between 2 points that can never be said to be certain to be in the same place, but otherwise what are the implications here?