- #1

deluksic

- 21

- 0

So I'm asking: how do i calculate rotational speed if i know r, mass, and distance to where is force being applyed?

I know that moment of inertia for a ball is 2/3*m*r2 and have no idea how to use it...

friction is also a problem.. i dont know how to calculate friction with wall if i know friction koeficient...

(sry for any mistake, im not from england)