An object has mass 10 kg and is hanging from a spring with stiffness coefficient k = 450 kg/sec². The damping coefficient due to friction is b = 120 kg/sec. The object is stretched to point that is 0.3 meters below equilibrium and released with an upward velocity of -0.6 m/sec. Assume that there are no external forces. Determine the equation of motion of the object. y(t) =

An object has mass 10 kg and is hanging from a spring with stiffness coefficient k = 450 kg/sec². The damping coefficient due to friction is b = 120 kg/sec. The object is stretched to point that is 0.3 meters below equilibrium and released with an upward velocity of -0.6 m/sec. Assume that there are no external forces. Determine the equation of motion of the object. y(t) =