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what i mean is that is it caused by the earth's spinning motion?? or what? if not than what causes the earth to spin?? why is it spinning??
The earth hasn't always been spinning, its rotation is relative to it's size, so as it grew in it's beginning stages, the rotation increased until the earth solidified and its mass became static.
Why does it rotate ?If it didn't, the forces in the unviverse would pull it apart and it would spread out like compressed gas does when it is released into air.
The rest of the milky way, our galaxy, is pulling the earth in ever changing directions as the concentrations of stars in the galaxy line up to concentrate the pull in all directions unevenly.
Now to the subject of gravity.
The purpose of Einstein's new theory has often been misunderstood, and it is criticized as a attempt to explain gravity. The theory does not offer any explanation of gravitation; that lies outside its scope, and does not even hint at a possible mechanism. It is true that we have introduced a definite hypothesis as to the relation between gravity and a distortion in space; but if that explains anything, it explains not gravitation, but space, i.e. the scaffolding constructed from our measures. - A.S. Eddington, Nature, March 14, 1918, page 36
We were once fish and existed as fish do without any gravitational force on us. The word Gravity is a word we have come up with for something we do not understand, when we do fully understand it we will not call it this anymore.
..., when we do fully understand it we will not call it this anymore.
So newtons law does not follow here, the gravitational force on the fish mass x the acceleration due to gravity g. This = 0 g=0 when the density of the object is the same as the medium.
Satellites do not spin in space and are not ripped apart.
I hope you meant there are some satellites, not all. I could name quite a few which I know for a fact were spinning - I used to process the data from them.
Quote from: MolonLabe on 13/10/2015 13:55:05I hope you meant there are some satellites, not all. I could name quite a few which I know for a fact were spinning - I used to process the data from them.Geostationary.
Quote from: Thebox on 13/10/2015 13:57:00Quote from: MolonLabe on 13/10/2015 13:55:05I hope you meant there are some satellites, not all. I could name quite a few which I know for a fact were spinning - I used to process the data from them.Geostationary. I don't know if this applies to all satellites or just some, but even geostationary satellites spin on their own axes. Try googling "Onboard spin axis controller for a geostationary spin-stabilized satellite" or http://arc.aiaa.org/doi/abs/10.2514/3.20215?journalCode=jgcdIs this what you mean by spin (or lack of it)?
If we spin a ball on the ground really fast , the north and south of the Y axis compresses, and the x axis tries to expand, however the ball is on the ground, the ground is has an equal and opposing force that allows the ball to compress, so my question is what force is underneath the earth at the south pole or north pole dependent to which way we are really up, that is an equal and opposing force to the earth to make the obloid physically possible?
Satellites do not spin in space and are not ripped apart. If the earth stopped spinning it would not rip apart, it would simply become a sphere compared to the present obloid shape.Force created from spin is a Y-axis invert force to a central point. There is no inwards force of the x axis created by spin, the x axis is under constant ''centrifugal force'' trying to expand. This shows you why gravity is mass attracted to mass. In saying that you have just given my an idea and a thought to question. If we spin a ball on the ground really fast , the north and south of the Y axis compresses, and the x axis tries to expand, however the ball is on the ground, the ground is has an equal and opposing force that allows the ball to compress, so my question is what force is underneath the earth at the south pole or north pole dependent to which way we are really up, that is an equal and opposing force to the earth to make the obloid physically possible?
Quote from: Thebox on 13/10/2015 13:47:18Satellites do not spin in space and are not ripped apart. I hope you meant there are some satellites, not all. I could name quite a few which I know for a fact were spinning - I used to process the data from them.