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Posted: Sun Aug 05, 2007 6:03 am
I'm going to have to agree witht the sceptics on this one. Building a space elevator of any kind seems both unrealistic and inefficient. Many people have mentioned the inherant instability of stretching such a long and thin elevator (either a flexible cable or a rigid tower) so far into space. It would be like trying to keep a piece of spaghetti a mile long straight up in the air (think cooked for cable, uncooked for tower). At any rate, beside nature's tendency to wreck the whole thing, there would be the effects of its use. Newtons's third law states, "To every action there is an equal and opposite reaction." If we do succeed in getting a cable strung from earth to a satalite in a stable geostationary orbit then it would not be long before the counter-force of moving people and cargo up the elevator would have the effect of pulling it down - or "reeling it in" to use a fishing analogy. It would not take much perturbation to cause the entire thing to shift out of equilibrium and then gravity would finish the job. If mankind has the resources necessary to attempt such a project, I think it would be better invested in developing more fuel efficient and safer rocket-type space launches.
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Posted: Fri Feb 15, 2008 3:29 am
There is a possibility that space elevators could exist by the next 20 years, but I doubt it'll be successful. It would have to face a lot of space debris and such. Also, the counterbalance would have to be moving at a very fast rate because of the earth's rotation, but this problem could be solved if the elevator is on the north/south pole. Another problem would be that the elevator would have to move so fast just to exit the atmosphere, and have to slow down a lot when entering back to the atmosphere.
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Posted: Sun May 03, 2009 9:14 am
from what i read i dont think it would work
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Posted: Thu Oct 22, 2009 6:31 pm
I don't think this is possible. We might need some type of cable device, which could snap and cause a lot of destruction on Earth.
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