Question

A cylinder rolls without slipping over a horizontal plane with constant velocity. The radius of the cylinder is equal to r. At this moment

• A. The speed of $B$ is $\sqrt{2}$ times the speed of $A$
• B. The radius of curvature of trajectory traced out by $A$ is $4r$
• C. The radius of curvature of trajectory traced out by $B$ is $2\sqrt{2}r$
• D. The radius of curvature of trajectory traced out by $C$ is $r$

Answer 1

Answer: (C)