(Solved): angular impulse & momentum Problem 7: The 0.8-lb ball, shown in the figure, is attached. to a co ...

Problem 7: The 0.8-lb ball, shown in the figure, is attached. to a cord which passes through a hole at A in a smooth table. When the ball is r1= 1.75 ft from the hole, it is rotating around a circle such that its speed is v1 = 4 ft/s. By applying the force F, the cord is pulled downward through the hole with a constant speed vc = 6 ft/s. A B 4 ft/s v? = 6 ft/s B 4 ft/s v? = 6 ft/s 16. Determine the speed of the ball at the instant it is r2- 0.6 ft from the hole. O a. 13.1 ft/s O b. 17.0 ft/s O c. 15.4 ft/s 8 points