The first two natural frequencies of the telescoping car antenna shown in Fig. 3.69 are given by
Question:
The first two natural frequencies of the telescoping car antenna shown in Fig. 3.69 are given by \(3.0 \mathrm{~Hz}\) and \(7.0 \mathrm{~Hz}\). Determine whether the vortex shedding around the antenna causes instability over the speed range \(90-130 \mathrm{~km} / \mathrm{h}\) of the automobile.
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