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Questions about alternative designs the asker has thought of, such as "why was X built this way and not this way"

2 votes
0 answers
42 views

Can Lorentz forces partially cancel centrifugal forces?

If we had a tidally stabilised skyhook (https://en.wikipedia.org/wiki/Space_tether#/media/File:Skyhooks.gif) with electric charge and with a vector of force aiming towards the center of the Earth, wo …
John's user avatar
  • 91
0 votes
1 answer
214 views

Can a spacecraft be propelled by two electromagnets of different size? [duplicate]

I watched a video of a toy car moving with 2 magnets, one bigger than the other. The answer I received was that the video was real, the toy car indeed moves. So, I was wondering, if an object with 2 m …
John's user avatar
  • 91