A Baseball Pitcher Loosens Up His Pitching Arm

Multiple Choice

A baseball pitcher loosens up his pitching arm.He tosses a 0.20-kg ball using only the rotation of his forearm,0.28 m in length,to accelerate the ball.What is the moment of inertia of the ball alone as it moves in a circular arc with a radius of 0.28 m?

A) 3.1E-3 kg·m²
B) 1.6E-2 kg·m²
C) 3.1E-2 kg·m²
D) 1.1E-2 kg·m²
E) 5.6E-2 kg·m²