The triceps muscle in the back of the upper arm is primarily used to extend the forearm. Suppose this muscle in a professional boxer exerts a force of 1.75 × 103 N with an effective perpendicular lever arm of 3.15 cm, producing an angular acceleration of the forearm of 150 rad/s2.What is the moment of inertia of the forearm, in kilogram meters squared?

The objective of this question is to find the moment of inertia of the forearm of a professional…

Answered: The triceps muscle in the back of the…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 5STP

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The triceps muscle in the back of the upper arm is primarily used to extend the forearm. Suppose this muscle in a professional boxer exerts a force of 1.75 × 10³ N with an effective perpendicular lever arm of 3.15 cm, producing an angular acceleration of the forearm of 150 rad/s².

What is the moment of inertia of the forearm, in kilogram meters squared?

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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