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 ofsupport (the atlanto-occipital joint, Point A). The musclesat the back of the neck should, therefore, exert a force tokeep the head erect. That is why your head falls forwardwhenyoufall asleep in the class.If the head weighs 53 N, calculate the force exerted by themuscles FM using the information in the figure. Assumethat x1 = 4.5 cm, x2 = 2.1 cm, and Fw = 53 N.FM =N%3DWhat is the force Fj exerted by the pivot on the head?F; =Nacer

As there are two force acting perpendicular to a fixed point, these forces generate a torque around…

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How do I find FM and FJ correctly?

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

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