題組內容

1 Consider a solid cylinder of mass m and radius r moving down from the top of a wedge of mass M. The plane of the wedge is inclined at an angle θ with respect to the horizontal plane.

(b). Now suppose that the cylinder is free to roll down the wedge without slipping. The horizontal plane is still without friction. How far does the wedge move in this case?Ans：___(2)____