A baseball pitcher pivots his extended arm about his shoulderjoint, applying a c

Question

A baseball pitcher pivots his extended arm about his shoulderjoint, applying a constant torque of 170 N· m for 0.23 s to his arm, whichhas a moment of inertia of 0.51 kg· m2. (a) Find his arm's angular acceleration andfinal angular velocity, assuming it starts from rest. angular acceleration _______ rad/s2 final angular velocity ________ rad/s
(b) Find the final speed of the ball, relative to his shoulder,which is 0.73 m from the ball.
_______ m/s (a) Find his arm's angular acceleration andfinal angular velocity, assuming it starts from rest. angular acceleration _______ rad/s2 final angular velocity ________ rad/s
(b) Find the final speed of the ball, relative to his shoulder,which is 0.73 m from the ball.
_______ m/s angular acceleration _______ rad/s2 final angular velocity ________ rad/s

Explanation / Answer

Torque T = 170 Nm

Time t= 0.23 s

Moment of inertia I = 0.51 kg m^ 2

Initial angular speed w = 0

                                         =

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