Answer to Question #6589 in Mechanics | Relativity for Anonymous

Question

If the rotational speed of a disc is doubled, what happens to the tangential speed of any point on the disc?

Answer 1

As we know angular speed omega=V/r where V-tngential speed, r -radius of revolution
hence tangential speed V=omega*r
Now it's clear that if we double omega tangential speed will also double regardless of value of r(i.e. for any point of the disk)