(Solved): A uniform circular disk which rolls with a velocity v=2.2m/s without slipping encounters an abru ...

A uniform circular disk which rolls with a velocity $v=2.2\mathrm{m}/\mathrm{s}$ without slipping encounters an abrupt change in the direction of its motion as it rolls onto the incline $?=19^{?}$. Determine the new velocity $v^{?}$ of the center of the disk as it starts up the incline, and find the fraction $n$ of the initial energy which is lost because of impact with the incline. Answers: $v^{?}=$ $n=$