For the purposes of this question, we will make a simplifying assumption that the only muscle that participates in liftingthe arm laterally in abduction is the deltoid muscle. Assume that the insertion point for the deltoid on the humerus is10 cm from the glenohumeral joint and line of action for this muscle (and all of its components together) is 10° fromhorizontal when the arm is at 90° abduction (straight to the side). You can assume that person has a body mass of 80 kg.The arm is 55 cm long, and the mass of the arm is approximately 5% of total body weight. Assume that the mass of thearm acts at about 40% of the total length of the arm (on the more proximal side).0 = 10°10 cm55 cmFigure 1: Position and dimensions of the arm in abduction.A) Using this information, calculate the load (N) on the glenohumeral joint when there is no weight inthe hand. What is the percent body weight of this load?B) Repeat the calculation when the hand is holding a 2 kg mass. Assume that 55 cm is the distance fromthe glenohumeral joint to the palm of the hand (and the weight).

Answered: Image /qna-images/answer/7af5d558-0822-4da6-a138-0733c3d26704.jpg

Answered: For the purposes of this question, we…

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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You are sitting in a chair and you are ready to kick a soccer ball from a sitting position using only your quadriceps muscles to rotate your knee. Be sure you will not pivot your hips, as you are sitting in the chair; we want to simplify this problem to include only rotating your lower leg at the knee joint and keeping your thigh firmly fixed to the seat. For our purposes, your quadriceps muscles can be treated as a single string that exerts a tension on the knee at a right angle from a lever arm of 2.00 cm. The knee is connected to a plausible 50.0 cm lower leg as measured from the pivot point of the knee to the contact point where we will kick the ball.Before we kick it, we would like to balance the ball on our contact point (at our ankle, say) 50.0 cm away from the pivot point of the knee by extending the lower leg straight out (upper leg aligned with the lower leg). The soccer ball has a mass of 400 grams. We will neglect all mass of all parts of the leg here for brevity.a) Draw an…
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