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Solved: A person working at a drafting board may hold her
Chapter 9, Problem 30(choose chapter or problem)
A person working at a drafting board may hold her head as shown in Figure \(9.40\), requiring muscle action to support the head. The three major acting forces are shown. Calculate the direction and magnitude of the force supplied by the upper vertebrae \(F_{v}\) to hold the head stationary, assuming that this force acts along a line through the center of mass as do the weight and muscle force.
Figure \(9.40\)
Equation Transcription:
Text Transcription:
9.40
F_v
Questions & Answers
QUESTION:
A person working at a drafting board may hold her head as shown in Figure \(9.40\), requiring muscle action to support the head. The three major acting forces are shown. Calculate the direction and magnitude of the force supplied by the upper vertebrae \(F_{v}\) to hold the head stationary, assuming that this force acts along a line through the center of mass as do the weight and muscle force.
Figure \(9.40\)
Equation Transcription:
Text Transcription:
9.40
F_v
ANSWER:
Solution
Step 1 of 3
Consider a person working at drafting board required muscle action to support her head, the three major forces acting are shown in the figure below we need to find out the direction and magnitude of the force supplied by the upper vertebrae Fv to hold her head stationary.