Unformatted text preview: . The magnitude of the radial component, a r , is Using the previously derived expression for v in terms of [omega] and r, we can rewrite the radial component of the acceleration as follows Figure 11.2 shows the direction of both the radial and the tangential components of the acceleration of point A. The radial component is always present as long as [omega] is not equal to zero; the tangential component is only present if the angular acceleration is not zero. Figure 11.2. Components of the acceleration of point A. We can conclude that when a rigid body is rotating around a fixed axis, every part of the body has the same angular velocity [omega] and the same angular acceleration a, but points that are located at different distances from the rotation axis have different linear velocities and different linear accelerations....
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This document was uploaded on 11/25/2011.
- Fall '09