Question: During a knee extension exercise, the shank is held 1 9 degrees below the horizontal. The angle of pull of the quadriceps muscle group is

During a knee extension exercise, the shank is held 19 degrees below the horizontal. The angle of pull of the quadriceps muscle group is 14.7 degrees and the distance from the knee joint to insertion is 0.10 m. The length of the shank is 0.21 m. The center of gravity of the shank is located in the middle of the shank.
What is the mechanical advantage of the muscle force relative to the weight of the shank? __

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