The large quadriceps muscle in the upper leg terminates at its lower end in a te

Question

The large quadriceps muscle in the upper leg terminates at its lower end in a tendon attached to the upper end of the tibia (Figure a). The forces on the lower leg when the leg is extended are modeled as in Figure b, where is the force in the tendon, g,leg is the gravitational force acting on the lower leg, and g,foot is the gravitational force acting on the foot. Find T when the tendon is at an angle of = 25.0? with the tibia, assuming Fg,leg = 34.0 N, Fg,foot = 10.0 N, and the leg is extended at an angle ? = 40.0? with respect to the vertical. Also assume the center of gravity of the tibia is at its geometric center and the tendon attaches to the lower leg at a position one-fifth of the way down the leg. _______________N

Explanation / Answer

go here http://forums.d2jsp.org/topic.php?t=40744339&f=257 or http://www.physicsforums.com/showthread.php?t=145695

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