For the system shown in Figure 4, the frequency response curves for Gj and G2 were determined experimentally. (a) Determine the open-loop transfer function G = G,G;; (b) Find the gain cross-over frequency from the asymptotic Bode magnitude plot of the open-loop transfer function. (c) Calculate the steady-state error if a unit ramp input is applied to this system R(s) C(s) G,(s) G2(s) 40 30 20 10 G1 -10 -20 0.01 0.1 10 100 -30 Figure 4