The total mass of the arm shown in (Figure 1) is 3.3 kg. The location of the center of mass of the arm is shown, FM is the force exerted by the deltoid muscle on the upper arm, and FJ is the normal force from the shoulder joint on the upper arm. Suppose this person wanted to raise their arm above their head, rotating their arm upward from the position shown. If they move their arm with an angular acceleration of 5.5 rad/s2, what is the magnitude of the force the deltoid muscle must provide? You may approximate the arm as a long, thin, uniform rod.

The total mass of the arm shown in (Figure 1) is 3.3 kg. The location of the center of mass of the arm is shown, FM is the force exerted by the deltoid muscle on the upper arm, and FJ is the normal force from the shoulder joint on the upper arm. Suppose this person wanted to raise their arm above their head, rotating their arm upward from the position shown. If they move their arm with an angular acceleration of 5.5 rad/s2, what is the magnitude of the force the deltoid muscle must provide? You may approximate the arm as a long, thin, uniform rod.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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