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The roller cam in Fig. 3 imparts a periodic motion to the mass-spring system, as shown. Use the principle of superposition and (a)find the possible values of r, (b) the response of the system m=1kg, k = 100 N/m, Y = 0.2 m, and m=1kg, k = 100 N/m, Y = 0.2 m, μ = 0.1. Assume no initial conditions. 2T • 3 (1) ►y(1) www x(1)