How does the speed of light affect the rotation of a disc?

[DaveC426913]

When you ignore everything that needs to be ignored, the upshot is that:

as the rim approaches c, it gets harder and harder to spin the disc faster. It will take an infinite amount of energy to accelerate the disc till the rim is moving at c - just like it takes an infiinite amount of enrgy to accelerate a rocket to c.

 

[korinteren]

When you ignore everything that needs to be ignored, the upshot is that:

as the rim approaches c, it gets harder and harder to spin the disc faster. It will take an infinite amount of energy to accelerate the disc till the rim is moving at c - just like it takes an infiinite amount of enrgy to accelerate a rocket to c.

Well, I guess that ends it.