Transcription of 1 12. Rolling, Torque, and Angular Momentum
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1 12. Rolling, Torque, and Angular Momentum
112. Rolling, torque , and Angular MomentumRolling Motion: A motion that is a combination of rotationaland translational motion, a wheel rollingdown the road. Will only consider rolling with out a disk or sphere rolling along a horizontalsurface, the motion can be considered in twoways: of rotational and translationalmotion: Center of mass moves in a translationalmotion. The rest of the body is rotating around thecenter of cmvvcmfifi II. Pure Rotational Motion:2 The whole object is revolving around apoint on the object in contact with thesurface. The point of contact changes with time. Most people find method I simpler gndfiaxis of rotationUse method I to analyze rolling withoutslipping:RRd= 2 When the object makes one completerevolution, the object has moved a distanceequal to the circumference, and each point onthe exterior has touched the ground once.
12. Rolling, Torque, and Angular Momentum Rolling Motion: • A motion that is a combination of rotational and translational motion, e.g. a wheel rolling down the road. • Will only consider rolling with out slipping. For a disk or sphere rolling along a horizontal surface, the motion can be considered in two ways:
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