You have a ball bearing and a bowl.You let the ball roll down from the top of the ball; it moves up and down the bowl's wall for some time. (a) Is this vibrational motion? explain why or why not. (b) draw a force diagram for the ball for four different positions and indicate what force or Force component is responsible for the acceleration toward the equilibrium position. (c) draw energy bar charts for these four ball- earth system positions..