Contraction of the quadriceps muscle on the front of the upper leg results in lower-leg extension. This action creates tension in thequadriceps tendon, which is transmitted to the patellar tendon through the patella, or kneecap bone. Tension in the patellar tendonapplies a force to the the tibia bone in the lower leg, producing a rotation about the knee joint. Imagine an athlete is performing anexercise on a leg extension machine. At the moment shown in the drawing, she is holding the weight at rest. Use the information in theat thisfigure, and the fact that the magnitude of P is 490 N, to calculate the magnitude of the tension in the patellar tendon (7p) aposition. Neglect the weight of the lower leg.Quadricepstendon40%- PatellaPatellartendonKnee joint(axis of rotation)5.35 cm38.1 cm120°F

Step 1: Data Given F = 490 N at 1200AC = 5.35 cm = 0.035 m AB = 38.1 cm = 0.381 m TP is acting at an…

Answered: Contraction of the quadriceps muscle on…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 77P

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Repeat Example 10.15 in which the stick is free to have translational motion as well as rotational motion.
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