If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it oscillates. Suppose it is displaced $0\mathrm{.}128$ m from its equilibrium position and released with zero initial speed. After $0\mathrm{.}950$ s $,$ its displacement is found to be $0\mathrm{.}128$ m on the opposite side and it has passed the equilibrium position once during this interval.