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Mon 6 Jun, 2011 11:54 am
For purposes of this experiment:
Our earth has a smooth terrain with no water.
We have a thin strong rope with a length longer than the earth's circumference, in this case at the equator.
Gravity is the same value along the equator.
We shall not consider any weather influences, so its a perfect sunny day, no wind.
If we tied one end of the rope to a robust pole at a metre above ground level, then proceed to unravel our rope along the equator, keeping it in tension, thus ensuring our rope is parallel to the ground; if we go around the world and return to our pole and tie the rope to it at the same height without losing our tension: Will the rope essentially 'float' a metre above ground, with its own tension and the pole holding it up.
It's doubtful. A rope is, essentially, woven fiber. It will stretch from its own weight, and sag to the ground. However, long before you get around the globe, probably well before you get half-way, government agencies will have so tied you up in summons and court cases that you'll never finish your project.
@tauchi,
Interesting question. Have you read any of Larry Niven's Ringworld stories, by the way?