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Back to 10.3 Dynamics of Rotational Motion: Rotational Inertia

10.3 Exercise 15

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The triceps muscle in the back of the upper arm extends the forearm. This muscle in a professional boxer exerts a force of 2.00×103 N\text{2}.\text{00} \times \text{10}^{3} \text{N} with an effective perpendicular lever arm of 3.00 cm, producing an angular acceleration of the forearm of 120rad/s2\text{120} \text{rad}/\text{s}^{2}. What is the moment of inertia of the boxer’s forearm?

OpenStax College Physics 2e, 10.3 Dynamics of Rotational Motion: Rotational Inertia, exercise 15

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.