If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it oscillates. Suppose it is displaced 0.130 from its equilibrium position and released with zero initial speed. After 0.800 , its displacement is found to be 0.130 on the opposite side and it has passed the equilibrium position once during this interval.
-find amplitude
-find the period of motion
-find the frequency of motion