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# 5.20 Figure 5.45 shows a motor mounted on a bracket that is hinged about the point...  5.20 Figure 5.45 shows a motor mounted on a bracket that is hinged about the point and can be assumed to be perfectly rigid. The motor results in a harmonic force on the bracket. Determine the response amplitude of the rigid rod. The rod has mass m and length. The spring is mounted at the end, and the damper at the midpoint.
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