If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it will oscillate. If it is displaced a distance 0.115 m from its equilibrium position and released with zero initial speed. Then after a time 0.815 s its displacement is found to be a distance 0.115 m on the opposite side, and it has passed the equilibrium position once during this interval.


a. Find the amplitude of the motion.

=________________m


b. Find the period of the motion.

=________________s


c. Find the frequency of the motion.

=_________________Hz