If the universal speed limit is 299,792,458m/s. And you had a rod several light-years long, and began spinning while holding the rod, wouldn’t the other end of the rod surpass the limits?
In: Physics
**IF** you could spin fast enough, yes.
**BUT**. The laws of physics as we understand them are consistent, and you’re looking at things from the wrong end (as it were) – if your rod is obeying physical laws, you **can’t** spin that fast, precisely **BECAUSE** it would make the other end surpass the limits.
As you speed up it will get harder and harder to rotate “a little faster” – and however strong you are, there’s a limit to your rotational speed that you’ll never reach. And if the rod is several light-years long, it’s a rather small limit.
*(As I work it out, the limiting period of rotation – in YEARS – is simply the length of the rod in light-years x 2 Pi. You can’t spin it faster than that without breaking known physical laws.)*
*(So if your rod is 1 light-year long, and you can somehow get the far end moving at a speed very close to that of light, it’s still going to take you over 6 years to spin it round you once. It will take about 7 days to turn by 1 degree. And you can’t spin faster – that’s an upper limit you can never quite reach, let alone exceed. You’re going to start out WAY slower. I hope you’re got a lot of time to spare.)*
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