6. (15 points)Consider the following equation as a model for a mass spring system with damping. my? + by? + ky = O Where: m=2kg k = 20kg/s^2 a. (3 points) If the damping factor b is 14 kg/s find an equation of motion, y(t), for the mass. b. (3 points) If the damping factor b is 4 kg/s find an equation of motion, y(t), for the mass. c. (9 points) Describe the difference in the responses of the mass for the two different values of b as t - infinity.