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View submission: Ask Anything Wednesday - Engineering, Mathematics, Computer Science
The rod will break.
Spinning in such a way that the outer velocity is below the speed of light would be possible *in principle* (but not with actual materials) but if you try to change the rotation speed or anything else then that change still just propagates with the speed of sound (which would have to be close to the speed of light here to avoid the rod breaking apart).
There's nothing here!