Kinesiology 2241A/B Lecture 7: 2241 Lecture 7 September 28
12 Jan 2016
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Document Summary
Kinetics is concerned with the relationship between the motion of bodies and its causes, namely forces and torques . Forces cause linear translation x, y, z. Torques cause rotation roll, pitch, yaw. Buoyancy floating sub in the ocean. Centripetal when you rotate something, hammer throw. Elastic u can distort the shape but they will always go back to normal. Fluid drag if you throw with a narrow edge as leading edge. Muscle the more you train the better performance. Reaction whats keeping you above the ground. You see the effects of them but you don"t really see them yourselves. External ground reaction force, your weight due to gravity. Mathematical link between force and acceleration with the introduction of mass. Vector composition to sum forces to find. Simplified diagram of a system isolated from its surrounding upon which all the external forces acting on the system are shown. Forces are characterized by magnitude, direction and point of application.
