External Biomechanics

External Biomechanics - External Biomechanics Click to edit...

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Click to edit Master subtitle style 9/9/11 External Biomechanics External Forces and Their Effects on the Body and Its Movement
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9/9/11 What are Forces? 1. The entity that tends to produce motion or to halt or change direction of motion.† Newton’s 1st Law: An object at rest will remain at rest, unless acted upon by an outside force. Also, an object in motion will remain in motion at a constant speed unless acted upon by an outside object. 2. A push or a pull. LeVeau, B.F. (1992). William &Lissner’s Biomechanics of Human Motion (3rd
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9/9/11 Dynamic forces In dynamics, an unequal net force accelerates or deforms an object; however, in rigid body mechanics, deformations are ignored. Newton’s 2nd Law: If a force acts on an object, then that object will accelerate in the direction of the force (F = ma).
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9/9/11 Acceleration Mechanically speaking, something accelerates when it starts, stops, speeds up, slows down, or changes direction. Therefore, a force is something that can cause an object to start, stop, speed up, slow down, or change direction.
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9/9/11 Static forces In statics, the force exerted by one object on
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External Biomechanics - External Biomechanics Click to edit...

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