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)
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Question 1 - For the exercise above, what movement is occurring at the Shoulder joint in its primary plane of movement during the lifting phase?
Question 2 - For the exercise above, what is/are the primary movement(s) occurring at the scapulothoracic joint during the lifting phase?
Question 3 - For the exercise above, what movement is occurring at the elbow joint in its primary plane of movement during the lifting phase?
Question 4 - For the exercise above, what movement is occurring at the Shoulder joint in its primary plane of movement during the lowering phase?
Question 5 - For the exercise above, what is/are the primary movement(s) is occurring at the Scapulothoracic joint during the lowering phase?
Question 6 - For the exercise above, what movement is occurring at the Elbow joint in its primary plane of movement during the lowering phase?
Question 7 - For the exercise above, what contraction mode is occurring at the Shoulder joint during the…
Chapter 13 Solutions
BASIC BIOMECHANICS
Ch. 13 - Why does a force directed through an axis of...Ch. 13 - Why does the orientation of a force acting on a...Ch. 13 - A 23-kg boy sits 1.5 m from the axis of rotation...Ch. 13 - Prob. 4IPCh. 13 - Two people push on opposite sides of a swinging...Ch. 13 - Prob. 6IPCh. 13 - Prob. 7IPCh. 13 - Prob. 8IPCh. 13 - A 10-kg block sits motionless on a table in spite...Ch. 13 - Prob. 10IP
Ch. 13 - A 35-N hand and forearm are held at a 45 angle to...Ch. 13 - A hand exerts a force of 90 N on a scale at 32 cm...Ch. 13 - A patient rehabilitating a knee injury performs...Ch. 13 - A worker leans over and picks up a 90-N box at a...Ch. 13 - A man carries a 3 m, 32-N board over his shoulder....Ch. 13 - A therapist applies a lateral force of 80 N to the...Ch. 13 - Tendon forces Ta and Tb are exerted on the...
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