8. If you stand on one foot while holding your other leg up behind you, your muscles apply a force to hold your leg in this raised position. The leg pivots at the knee joint, and the force that holds the leg up is provided by a tendon attached to the lower leg as shown in the Figure. Assume that the lower leg and the foot have a combined mass of 4.0 kg, and that their combined center of gravity is at the center of the lower leg. a. How much force must the tendon exert to keep the leg in this position? b. As you hold your leg in this position, the upper leg exerts a force on the lower leg at the knee joint. What are the magnitude and direction of this force?

8. If you stand on one foot while holding your other leg up behind you, your muscles apply a force to hold your leg in this raised position. The leg pivots at the knee joint, and the force that holds the leg up is provided by a tendon attached to the lower leg as shown in the Figure. Assume that the lower leg and the foot have a combined mass of 4.0 kg, and that their combined center of gravity is at the center of the lower leg. a. How much force must the tendon exert to keep the leg in this position? b. As you hold your leg in this position, the upper leg exerts a force on the lower leg at the knee joint. What are the magnitude and direction of this force?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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