Static Equilibrium Knee Slightly Bent
Автор: Hopped Up on Physics
Загружено: 2020-04-08
Просмотров: 275
Описание:
You are assigned some physical therapy after surgery. You are sitting in a chair with your leg outstretched, but slightly bent. The lower leg is making an angle of 30deg with respect to the horizontal. The lower leg weighs 44.5N and the center of mass is located 0.25m below the knee. A 10kg mass is resting on top of the foot and the leg is being held in this position by the quad muscle exerting a force. The quad muscle is attached 0.1m below the knee and makes an angle of 25deg with respect to the leg bone.
A. What force does the quad muscle exert?
B. What is the force at the knee joint?
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