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How do I find FM and FJ correctly?

How do I find FM and FJ correctly?

College Physics
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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How do I find FM and FJ correctly?
Even when the head is held erect, as shown in the figure, its center of mass is not directly over the principal point of support (the atlanto-occipital joint, Point A). The muscles at the back of the neck should, therefore, exert a force to keep the head erect. That is why your head falls forward when you fall asleep in the class. If the head weighs 53 N, calculate the force exerted by the muscles FM using the information in the figure. Assume that x1 = 4.5 cm, x2 = 2.1 cm, and Fw = 53 N. FM = N %3D What is the force Fj exerted by the pivot on the head? F; = N acer
Transcribed Image Text:Even when the head is held erect, as shown in the figure, its center of mass is not directly over the principal point of support (the atlanto-occipital joint, Point A). The muscles at the back of the neck should, therefore, exert a force to keep the head erect. That is why your head falls forward when you fall asleep in the class. If the head weighs 53 N, calculate the force exerted by the muscles FM using the information in the figure. Assume that x1 = 4.5 cm, x2 = 2.1 cm, and Fw = 53 N. FM = N %3D What is the force Fj exerted by the pivot on the head? F; = N acer
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