(Answered) What is the maximum displacement of the bridge

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The longitudinal vibrations of a bridge are to be modeled as a single-degree-of-freedom system. The mass of the bridge is 2.5kg. The stiffnesses of the columns are 1500 N/m and 1000 N/m. c=10 N-s/m.

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The bridge is subjected to the following loading.

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What is the maximum displacement of the bridge deck?

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