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P08_momentinertia - Rolling Motion Name Teammates...

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Rolling Motion Name: Teammates: Introduction One of the important aspects of velocity is the fact that it has a magnitude and a direction. As you have learned when you studied acceleration, you can change the velocity by changing its magnitude, its direction or both. In the first part of the lab, we will investigate the motion of an object moving at constant velocity in a circle. In this case, the acceleration of the object is due only to the change in direction of the velocity. In the second part of the lab, we will deal with the concept of moment of inertia. If you have ever experienced a flat tire, you might have wondered why a tire is hollow and must be inflated with air. It cannot be just for the cushioning qualities that an inflated tire gives the wheel. Surely in this age of technological marvels we can develop a solid substance that will give a similar response. The reason that we do not have a solid tire has to do with the rotational properties of such a device. Besides the fact that a solid tire would result in a more massive wheel, and hence, a heavier vehicle, it would also require more mass to be further from the center of rotation for the wheel than an inflated tire. Even if you could somehow create a
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