A young girl sits at the edge of a dock by the bay, dipping her feet in
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A young girl sits at the edge of a dock by the bay, dipping her feet in the water. At the instant shown in FIGURE 11-62, she holds her lower leg stationary with her quadriceps muscle at an angle of 39° with respect to the horizontal. Use the information given in the figure, plus the fact that her lower leg has a mass of 3.4 kg, to determine the magnitude of the force, FQ, exerted on the lower leg by the quadriceps.
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