BASIC BIOMECHANICS
8th Edition
ISBN: 9781259913877
Author: Hall
Publisher: RENT MCG
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Chapter 4, Problem 9AP
How much compression is exerted on the radius at the elbow joint when the biceps brachii, oriented at a 30° angle to the radius, exerts a tensile force of 200 N? (Answer: 173 N)
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How much force must be produced by the biceps brachii, attaching at 90? to the radius
at 3 cm from the center of rotation at the elbow joint, to support a weight of 200 N held
in the hand at a distance of 30 cm from the elbow joint? (Neglect the weight of the
forearm and hand, and neglect any action of other muscles)
Maximal muscle force changes continuously throughout the elbow flexion according to the joint angle.
True
False
Two lifter's knees are of interest at a specific moment in their lifts. In both lifts,
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Chapter 4 Solutions
BASIC BIOMECHANICS
Ch. 4 - Prob. 1IPCh. 4 - Prob. 2IPCh. 4 - Prob. 3IPCh. 4 - Prob. 4IPCh. 4 - Prob. 5IPCh. 4 - Prob. 6IPCh. 4 - What kinds of fractures are produced only by...Ch. 4 - Prob. 8IPCh. 4 - In Problem 8, how much total stress is present on...Ch. 4 - Why are men less prone than women to vertebral...
Ch. 4 - Hypothesize about the way or ways in which each of...Ch. 4 - Prob. 2APCh. 4 - Prob. 3APCh. 4 - Hypothesize as to the ability of bone to resist...Ch. 4 - How are the bones of birds and fish adapted for...Ch. 4 - Prob. 6APCh. 4 - Hypothesize as to why men are less prone to...Ch. 4 - Prob. 8APCh. 4 - How much compression is exerted on the radius at...Ch. 4 - If the anterior and posterior deltoids both insert...
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