For the pinball game of Prob. 2/109, if the plunger imparts an initial speed of 3 m /s to the ball at time t = 0, determine the acceleration a of the ball (a) at time t = 0.08 s and (b) at time t = 0.20 s. At point F, the speed of the pinball has decreased by 10% from the initial value, and this decrease may be assumed to occur uniformly over the total distance traveled by the pinball. Use the values r = 150 mm and θ = 60°.
Data from Prob. 2/109
An overhead view of part of a pinball game is shown. If the plunger imparts a speed of 3 m/s to the ball which travels in the smooth horizontal slot, determine the acceleration a of the ball (a) just before it exits the curve at C and (b) when it is halfway between points D and E. Use the values r = 150 mm and θ = 60°.
