Question 3: The free body diagram of the back model in static equilibrium is shown in Figure 1 below. Develop an equation for T as a function of W in terms of the defined variables. Hint: take a moment about the lower back where Fx and Fy act (i.e. lower lumbar spine). Please show your work! Fx LT T W₂ ---- Lb W Lw Figure 1. Free body diagram of the back model. T is the tension exerted by the extensor muscles (all muscles combined), W, is the weight of the upper body (torso and arms), W is the weight of the object held in the hand. LT is the perpendicular moment arm of T; Lb and Lw are the perpendicular moment arms of W₁ and W.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Question 3: The free body diagram of the back model in static equilibrium is shown in Figure 1
below. Develop an equation for T as a function of W in terms of the defined variables. Hint: take a
moment about the lower back where Fx and Fy act (i.e. lower lumbar spine). Please show your work!
Fx
LT
LEDER
F₁
W₂
Lb
W
un mun
-Lw
b
Figure 1. Free body diagram of the back model. T is the tension exerted by the extensor muscles (all
muscles combined), Wo is the weight of the upper body (torso and arms), W is the weight of the
object held in the hand. LT is the perpendicular moment arm of T; Lo and Lw are the perpendicular
moment arms of W, and W.
A
Transcribed Image Text:Question 3: The free body diagram of the back model in static equilibrium is shown in Figure 1 below. Develop an equation for T as a function of W in terms of the defined variables. Hint: take a moment about the lower back where Fx and Fy act (i.e. lower lumbar spine). Please show your work! Fx LT LEDER F₁ W₂ Lb W un mun -Lw b Figure 1. Free body diagram of the back model. T is the tension exerted by the extensor muscles (all muscles combined), Wo is the weight of the upper body (torso and arms), W is the weight of the object held in the hand. LT is the perpendicular moment arm of T; Lo and Lw are the perpendicular moment arms of W, and W. A
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