1.59 Determine mk and c, for an equivalent system model of the system of Fig. 1-54 using x as the generalized coordinate. Fig. 1-54 nive → CHAP. 1] MECHANICAL SYSTEM ANALYSIS 35 Ans. b 1.60 Determine and c. for an equivalent system model of the system of Fig. 1-54 using as the generalized coordinate. Ans. k-27k 1.61 Determine Lk and c for an equivalent system model of the system of Fig. 1-55 using as the generalized coordinate. Ans. Fig. 1-55 T Slender bar of mass m K-BAL 1.62 Use an energy method to derive the equivalent stiffness of two identical springs in series. Ans. k/2