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< BACK NEXT> That tendency to increase the distance is antigravity as we have defined it. It is that tendency which gravity is opposed to. When the rate of distance derease of the gravity vector is exactly matched by the rate of distance increase by the motion vector the object will follow a circular path or orbit around the earth as it was doing in figure 5. That is the basics of how any orbit works. It is how the International Space Station stays up. It is how the moon stays out there. It is how the sun circles the center of the galaxy. Now if we increase the motion vector of our object as in figure4, see (figure 6.) then the rate of distance increase (antigravity) becomes greater than the rate of distance decrease caused by the gravity vector and our object will move outward from the Earth. |
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Now we are going to build our arbiting object into the rim of a spinning ring of mass. (figure 7.) | |||||||||
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Again for the sake of simplicity the axis of the ring is along the line from the center of the ring to the centre of the Earth.
The velocity of the rim of the ring is the same orbital velocity that the object had in our earlier example in figure 4. In terms of our object only one more vector has been added. That vector is the centripital vector from our object to the to the axis of the ring which is a radiant vector. Note well that this vector does not contribute any motion toward or away from the center of the Earth. The balance of distance increase of the motion vector and distance decrease of the gravity vector still exists and this holds for any part of the ring not just for the part that is composed of our object. What the centripital vector does do is bends the path of our object from one that encircles the Earth to one that encircles the axis of the ring. Our object and all parts of the ring still retain all the vectors of an orbit about the Earth and will retain their distance from the Earth. The ring will ineffect "orbit" in place while its axis hovers above the Earth. Again we are going to increase the speed of our object and the rest of the ring to above orbital velocity. (figure 8.) |
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