A $7\mathrm{.}7-$kg uniform sphere $($r$=0\mathrm{.}38$ m$)$ initially slips when it is placed on the incline at time t$1=0$ s with clockwise angular velocity $6$ rad$/$s and vG$=0$ m$/$s$.$ The coefficient of kinetic friction between the sphere and the incline is $0\mathrm{.}4$ and the angle of the incline is $32\mathrm{.}4$ degrees.

Find how long it takes $($t$2)$ for the sphere to stop slipping on the incline. g$=9\mathrm{.}81$ m$/$s$2.$

Find the velocity of the disk's center G at the instant $3\mathrm{.}3$ seconds later if the truck increases its speed to $10\mathrm{.}8$ m$/$s over the same $3\mathrm{.}3-$s time interval. Consider positive as being to the right. g$=9\mathrm{.}81$ m$/$s$2$