Question

3. The 2 pound bar is moving horizontally to the left with a speed of 30 ft/sec when it hits a wall. The coefficient of restitution between the wall and

the bar is 0.3. The bar is four-feet long. What are the angular velocity and velocity of the center of gravity of the bar immediately after the impact? Answer: 16.714 rad/sec clock-wise and 7.714 ft/sec to the left.

Fig: 1

Fig: 2