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Unformatted text preview: phase velocity expression is known to be v p = A , where A > is a real constant (which depends on density, radius, and Youngs modulus of the rod) and is the oscillation frequency in rad/s. a) Determine the unit for constant A in MKS system. b) Determine the group velocity expression for bending waves. c) Suppose on a very long rod a narrowband pulse of bending wave oscillations is excited, and the pulse is observed to travel on the rod from left to right. An observer moving to the right with the velocity of the pulse pays attention to the motion of the crests of the carrier of the pulse. Will he/she observe crest motions from righttoleft or from lefttoright? Explain clearly. 1...
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 Fall '09
 FRANKE

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