Manual of Structural Kinesiology
20th Edition
ISBN: 9781259870439
Author: R .T. Floyd, Clem W. Thompson
Publisher: McGraw-Hill Education
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Question
Chapter 3, Problem 1RLE
Summary Introduction
To list: The lever component identification chart.
Introduction: The movement of the body and its joints are possible through skeletal muscles. The joint movement of the human body is caused by contractions of the muscles, which also gives the body protection and dynamic stability. Moreover, along with bones the muscles also give posture to the body.
Expert Solution & Answer
Explanation of Solution
Lever class | Example | Force | Axis | Resistance | Advantage provided |
1st | Carrying a glass of water in one hand | Fingers and thumbs push opposite direction upwards | palm | Glass weight pushes downwards due to gravity | Balancing glass from falling |
1st | Inserting thumb tack in bulletin board with finger nail | Thumb tack is pushed out by finger nail | Dorsal aspect of the finger nail towards the bulletin board | Thumb tack in the board | Force motion |
2nd | Lifting one end of the table | Lifting end of the table | Table legs on other end of table | Weight of the table | Force motion |
2nd | Opening door by the door edge | Pulling edge of the door | Door is hinged | Door | Force motion |
3rd | Serving volleyball | Arm is in forward motion | Shoulder | Ball | Range and speed of motion |
3rd | Throwing a bowling ball | Arm is in forward motion | Shoulder | Ball | Range and speed of motion |
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Chapter 3 Solutions
Manual of Structural Kinesiology
Ch. 3 - Prob. 1RLECh. 3 - Anatomical levers can improve physical...Ch. 3 - Prob. 3RLECh. 3 - Prob. 4RLECh. 3 - For the lever system component calculation chart,...Ch. 3 - What class of lever is an automobile steering...Ch. 3 - List two different wheel and axles in which the...Ch. 3 - Prob. 8RLECh. 3 - Prob. 9RLECh. 3 - Prob. 10RLE
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