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  3. two subway cars as shown in figure 1 have mass m =

two subway cars as shown in Figure 1 have mass m = 2000 kg and are...

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Mechanical Engineering

two subway cars as shown in Figure 1 have mass m = 2000 kg andare connected by a coupler that can be modeled as a spring ofstiffness k = 280,000 N/m. Use Newton’s method to derive theequations of motion, calculate the natural frequencies anddetermine the associated mode shapes. also, find the time responsex1(t) and x2(t) of the subway initial conditions: x(0)= [ 0, 0.2]with zero initial velocity vector.  

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