I did some googling and came up with some dentist drills that do about 500,000 rpm and obviously the smaller / thinner something is, the faster it can be spun - a spindle etc.
Also there appears to be some missile guidance systems which spin pretty fast, but even taking all this into account, man must have made something which spins faster than all the others. What is it?
There must be a relationship between the strength of a material and the max speed that - say a disk of material x, weighing 5 grams / 3mm thick, can be spun before it breaks up. Anyone know what this is? And what material is most resistant to centripetal force?
( for uk dopers - i’m sure there is a Alistair Campbell joke in there…)
I’ve used this air-driven centrifuge many times, and it has a top speed of 100 000 rpm. I love it, because it sounds like a miniature jet engine winding up. It also does wonders for really lipemic serum samples.
You’d assume a particle accelerator can spin a proton over a small circular track alot faster than 500,000 RPMs. I do not know if that constitutes man made though, at least not in the way that a mechanical device like a drill is manmade.