Physics, 24.05.2021 20:00 crysderria
The mass of Trevor's head is 5 kg and its centre of mass (A) is located LHead = 30 mm anterior to the axis of
rotation (atlanto-occipital joint, B) acting at an angle of 90°. The neck extensors act LNeck = 52 mm posterior
to the axis of rotation, at an angle of 0 = 128º. Trevor is currently holding his head still. How much force do the
neck extensor muscles need to produce to keep the head from nodding (i. e. keep his head still). Assume
gravity is 9.8 m. s??
A
LNeck
LHead
ө
B
90°
Answers: 3
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The mass of Trevor's head is 5 kg and its centre of mass (A) is located LHead = 30 mm anterior to th...
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