A Baseball Pitcher Loosens Up His Pitching Arm

Multiple Choice

A baseball pitcher loosens up his pitching arm.He tosses a 0.15-kg ball using only the rotation of his forearm,0.26 m in length,to accelerate the ball.If the ball starts at rest and is released with a speed of 23 m/s in a time of 0.4 s,what torque is applied to the ball while being held by the pitcher's hand to produce the angular acceleration?

A) 33.2 N·m
B) 22.4 N·m
C) 2.2 N·m
D) 3.3 N·m
E) 221.2 N·m