Explanation Given: Mass of the ball, m = 3.6 kg Length from the triceps, l = 31 cm = 0 .31 m Acceleration of the ball, a = 7 m/s 2 Distance from the pivot of forearm, r = 2.5 cm = 0 .025 m Formula Used: The moment of inertia of the ball is calculated as I = m l 2 Here, m is the mass of the ball l is the length from the triceps muscle The angular acceleration is calculated as α = a l Here, α is the angular acceleration Torque is calculated by the formula τ = I α Here, I is moment of inertia Calculation: (a) The moment of inertia of the ball is calculated as I = m l 2 Plugging the values in the above equation I = 3

7th Edition

ISBN: 9780321929013

Author: Douglas C. Giancoli

Publisher: PEARSON

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Chapter 8, Problem 35P

To determine

Torque needed to accelerate the ball.

Force exerted by the triceps muscle.

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Chapter 8, Problem 34P

Chapter 8, Problem 36P

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