Comments by "" (@kunibald128) on "" video.

  1. ​  Exactly! Also strings, as the elementary constituents of matter, are unbreakable, so all the problems related with the resistance of the cable are automatically solved. We just need to wait ten more years XD
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  2. Hi. It seems that what you are missing are the basic laws of physics.. But your question is not stupid, so let me try to explain. Yes the cable must rotate together with the Earth or otherwise it will wrap up and fall down. And yes at some initial stage you will certainly need some energy to assemble the cable in the right configuration and make sure it has the right velocity. Once the set up is complete, however, you do not need further power, because the relevant forces balance each other out and the system is in equilibrium. More in general, you should keep in mind that you do not need to apply forces, or consume power, "just to keep the speed constant". A force is needed when you want to alter the state of motion of an object, for instance to accelerate or decelerate it, but not if you just want to keep its speed constant. This is the first law of dynamics. The situation gets more complicated in many everyday situations because of air resistance (to overcome that you need power even just to keep the speed constant) and this complication is why the principle is not immediately obvious and it took Galileo and Newton to figure it out. In space you have no air resistance and applying laws of dymamics is relatively easy. Hope this helps!
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  3. I think you are raising a very interesting point about the instability of the intermediate steps. This sounds like a formidable problem to me, it would be nice to hear if anyone has any suggestions on how to possibly overcome it.
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  4. I want a space elevator to lift a giant glowing violin plot for everyone to see!
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