BASIC BIOMECHANICS
BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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Chapter 13, Problem 8AP

A man carries a 3 m, 32-N board over his shoulder. If the board extends 1.8 m behind the shoulder and 1.2 m in front of the shoulder, how much force must the man apply vertically downward with his hand that rests on the board 0.2 m in front of the shoulder to stabilize the board in this position? (Assume that the weight of the board is evenly distributed throughout its length.) (Answer: 48 N)

Chapter 13, Problem 8AP, A man carries a 3 m, 32-N board over his shoulder. If the board extends 1.8 m behind the shoulder

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With the shoulder flexed at 30°, the moment arm of the deltoid muscle is 2.0 cm. Solve for the force exerted by the deltoid muscle at the glenohumeral joint give the following assumptions: The deltoid is the only active muscle at the glenohumeral joint The weight of the humerus is 48 N. The center of gravity of the humerus is located 30 cm from the shoulder center of rotation STATIC EQUILIBRIUM EQUATIONS CONSIDERING ONLY THE DELTOID MUSCLE Fo MA = 18 Cn COR B=55". 0-30° RaF 30 cm FG = 24 N
Please help with the pictures given a sketch for each bullet point and with the calculations.
5 of 10 Which of the following exercises would be an example of a Stabilization-Focused exercise for the shoulders? Standing cable row Bench press Single-leg dumbell overhead press shoulder press machine Next ▶
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