Constants When you bend your knee, the quadriceps muscle is stretched. This incr

Question

Constants When you bend your knee, the quadriceps muscle is stretched. This increases the tension in the quadriceps tendon attached to your kneecap (the patella), which, in tun, increases the tension in the patella tendon that attaches your kneecap to your lower leg bone (the tibia) Simultaneously, the end of your upper leg bone (the femur) pushes outward on the patella. Thé figure shows how these parts of a knee joint are arranged. (Figure 1) Figure 1 of 1 Quadricens tendon Patella tendon Tibia

Explanation / Answer

A)

54 sin 42 + F sin a = 54

F sin(a) = 17.87

F cos(a) = 54 cos42 = 40.13

F^2 = F^2 sin^(a) + (40.13)^2

F = 43.93 N

Angle, a = arcsin(17.87/43.93) = 24 degree

So,

A) Force, F = 43.93 N

B) Theta = 24 degree below horizontal

Comment in case any doubt please rate my answer ....

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