Question

A ring is rolling on a rough horizontal surface without slipping with a linear speed v. The ratio of speeds of point B and A is :

Answer 1

$V_A=\sqrt{V^2+(Rw{)}^2}=\sqrt{2}v$

$V_B=v+Rw=2v$

$\frac{V_B}{V_A}=\frac{2v}{\sqrt{2}v}=\sqrt{2}$