Explanation Given: Angular velocity of baseball, ω 1 = 3 π rad/s Length of the baseball bat, L = 1.1 m Mass of the baseball bat, m = 1.0 kg Mass of baseball, m ' = 0.15 kg Formula Used: Angular momentum is the product of moment of inertia and angular velocity. L = I ω In the absence of external torque, the angular momentum remains conserved. τ = Δ L Δ t L = constant ( If τ = 0 ) ⇒ I 1 ω 1 = I 2 ω 2 ⇒ m L 2 12 ω 1 = m ' L v Calculation: Since there is no external torque, the angular momentum is conserved

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

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Chapter 10, Problem 20TP

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The speed of the baseball.

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The speed of the baseball.

Solution Summary: The author calculates that the angular momentum of the baseball is conserved since there is no external torque.

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