Chapter 12, Problem 9CQ

To determine

a) Is the torque about the pivot after pushing negative, positive or zero?

b) What happens to the ball’s angular velocity after push has ended

i) Steadily increase

ii) Increase for a while, the hold steady

iii) Hold steady

iv) Decrease for a while, the hold steady

v) Steadily decrease

c) Is the torque about right after pushing negative, positive or zero?