The forearm-hand complex weights 51N, and the center of mass is 0.17 m from the elbow joint. The person is holding a large wheel of cheese that weighs 98N. The center of mass of the cheese is 0.34 m from the elbow joint. The moment arm of the elbow flexors is estimated to be 0.03m from the elbow. The relative elbow angle is (angle between the humerus and the forearm) is 60°. What force must be exerted by the elbow flexors to keep the forearm in this static position (in N)?

The forearm-hand complex weights 51N, and the center of mass is 0.17 m from the elbow joint. The person is holding a large wheel of cheese that weighs 98N. The center of mass of the cheese is 0.34 m from the elbow joint. The moment arm of the elbow flexors is estimated to be 0.03m from the elbow. The relative elbow angle is (angle between the humerus and the forearm) is 60°. What force must be exerted by the elbow flexors to keep the forearm in this static position (in N)?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 69A

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