Problem 1 (10 pts) In the leg extension exercise, the quadriceps mechanism applies a muscle force...

 

Transcribed Image Text:

Problem 1 (10 pts) In the leg extension exercise, the quadriceps mechanism applies a muscle force M through the patellar tendon at the point P as shown (we are only considering one leg). Solve for the force M and the joint reaction force J (not shown). The joint reaction force J passes through the center of rotation C of the tibia about the femoral condyles. Show the magnitude, direction, and point of application of J. 30 deg 8 cm 25 cm M=? 22 cm W=50 N 45 deg F = 100 N Problem 1 (10 pts) In the leg extension exercise, the quadriceps mechanism applies a muscle force M through the patellar tendon at the point P as shown (we are only considering one leg). Solve for the force M and the joint reaction force J (not shown). The joint reaction force J passes through the center of rotation C of the tibia about the femoral condyles. Show the magnitude, direction, and point of application of J. 30 deg 8 cm 25 cm M=? 22 cm W=50 N 45 deg F = 100 N