During the design of the spring-support system for the m, = 3590 kg weighing platform, it is decided that the frequency of free vertical vibration in the unloaded condition shall not exceed 6.5 cycles per second. mt mp k а) Determine the maximum acceptable spring constant k for each of the three identical springs. Insert your answer in k N/m correct up to at least a third decimal place. b) For spring constant, what would be the natural frequency fn of vertical vibration of the platform loaded by the m; = 55 Mg truck? Insert your answer in Hz correct up to at least a third decimal place.

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