Kinesiology 2241A/B Lecture 9: TORQUES AND ROTATIONS
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30 Jan 2018
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Movement of force (aka torque: according to newton"s 2nd law, when a force is applied to an object, then it accelerates in a straight line, the force must be applied at the center of mass. I= rotational mass: resistance the body puts up to being angularly accelerated (depends on how massive you are and how far from your center of rotation this is applied) So the pr: oper way to write the torque equation is. Levor arm tends to be small so forces need to be greater so that everything on our bodies can be more compact and slim: right hand rule for a torque vector. Calculating torque: you are most effective pulling at right angles to whatever you are trying to pull. More than one torque (midterm question: we can apply more than one force to an object. State which direction of movement (clockwise/ counter- clockwise) is going to be positive and which negative.
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