2) A solid sphere of mass in starts from rest and rolls without slipping down a track from a height h, and collides with a nisssless plate connected to a niassless spring of strength 1:. Assume that the bottom of the track and the plate are frictionless, such that the angular velocity, to, of the hall remains constant as it compresses the spring. no friction Derive an expression for the maximum compression of the spring, climax, as suming the potential energ}r of the spring is Uspring = %};d2