Consider the system shown in Figure P5.60. The equations of motion are
m11 + (c1 + c2) 1] + (k1 + k2)x1 - c22 - k2x2 = 0
m22 + c22 + k2x2 _ c21 - k2x1 = f(t)
Suppose that m1 = m2 = I, k1 = 3, c2 = l, k1 = 1, and k2 = 4.
a. Develop a Simulink simulation of this system. In doing this, consider whether to use a state-variable representation or a transfer function representation of the model.
b. Use the Simulink program to plot the response x1(t) for the following input. The initial conditions are zero.

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