Answered: . The forces exerted by the bicep…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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. The forces exerted by the bicep muscle and acting on the elbow when a 12 kg barbell is being curled
can be modeled based on the diagram above. The bicep muscle can be treated as a vertical cable. The
mass and length of the forearm are 2 kg and 32 cm, respectively. The center of mass of the forearm is a
distance of 14 cm from the point P, while the bicep connects to the forearm at a point 4.5 cm from P.
a) Determine the tension in bicep muscle and the force of the humerus acting downward on the elbow
at point P. b) Assuming the tension in the bicep muscle continues to be oriented vertically, determine
the tension in the bicep muscle and the force acting at P after the barbell has been raised by an angle
of 30 relative to the horizontal.

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