College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 94

A billiard ball at rest is struck (bold arrow in Fig.) by a cue with an average force of 5.50 N lasting for 0.050 s. The cue contacts the ball's surface so that the lever arm is half the radius of the ball, as shown. If the cue ball has a mass of 200 g and a radius of 2.50 cm, determine the angular speed of the ball immediately after the blow. (Neglect friction.)

FIGURE Cueing low See Exercise.