In 27 through 29, the system of Fig. 5.4.14 is taken as a
Chapter , Problem 27(choose chapter or problem)
In 27 through 29, the system of Fig. 5.4.14 is taken as a model for an undamped car with the given parameters in fps units. (a) Find the two natural frequencies of oscillation (in hertz). (b) Assume that this car is driven along a sinusoidal washboard surface with a wavelength of 40 ft. Find the two critical speeds.
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