If an object on a frictionless horizontal surface is attached to a spring, it is displaced and then released, it will oscillate. If you scroll 0.120 m from its equilibrium position and is released with initial speed zero, after 0.800 s its displacement is 0.120 m on the opposite side , having passed the equilibrium position once during this interval.

Calculate :

a) amplitude

b) period

c) frequency

Please include drawing