The mass in a mass-spring harmonic oscillator is pulled from equilibrium to an initial displacement of 0.23 m and is then released from rest. After T = 818 the amplitude is observed to be 0.067 m. Find the value of the damping rate y = b/2m, where the motion of the block is described by x = Ae-" cos (ot + p). %3! s- (+ 2E-5 s-)