<The three main forces that act on the patella are shown onthe diagram of the knee joint below. These forces are thequadriceps muscle force (FQ), the patella ligament force(FPL), and the patellofemoral joint reaction force (FPF). Theangles a and ẞ are with respect to a line that isperpendicular to FPF. Assuming a = 15°, ẞ = 20°, and FQ =3725 N, use equations for static equilibrium to calculate (a)FPL, and (b) FPF. (Hint: To solve this problem consider usinga coordinate system that is aligned with the principal axesof the patella instead of the usual vertical and horizontalaxes). (c) Many people assume FQ and FPL are always equalin magnitude but this is only true under certaincircumstances. Under what conditions are FQ and FPL equalin magnitude?FoFPFFP BGriffithUNIVERSITYQueensland Australia

Solving for Forces Acting on the Patella:We can solve this problem using the principles of static…

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