An 8 lb weight stretches a spring by 16 in. If the weight is pushed up and released 1 ft above the equilibrium with a downward velocity of 6 2 ft/s. Set up the IVP for this spring mass system. Solve this IVP and rewrite your solution into a single sinusoid. Then, find the amplitude, period, and initial phase of the motion. Find the third time when the weight reaches the lowest point and the second time it reaches the equilibrium.