F. CG 5.0 çm 2.5 cm w = 50 N

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter38: Refraction And Images Formed By Refraction
Section: Chapter Questions
Problem 70PQ: A Fill in the missing entries in Table P38.70. Table P38.70
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Even when the head is held erect, as in Figure shown, its center of mass is not directly over the principal point of support (the atlanto-occipital joint). 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. What is the force exerted by the pivot on the head?

F.
CG
5.0 çm
2.5 cm
w = 50 N
Transcribed Image Text:F. CG 5.0 çm 2.5 cm w = 50 N
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