Suppose that the mass in a mass-spring-dashpot system with mass m = 25, damping constant c = 60, and spring constant k = 180 is set in motion with (0) 16 and '(0) = 47. (a) Find the position function x(t) in the form x(t)= - cost 3√19 5 3√19 5 (b) Find the quasi-period of the oscillations and the equations of the "envelope curves" shown in the figure below, which graphs the motion of the mass in the system described above. Quasi-period of Oscillations = Equation of Top "Envelope Curve" = Equation of Bottom "Envelope Curve" =

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