An object is undergoing SHM with period 0.900 s and
amplitude 0.320 m. At t = 0 the object is at x = 0.320 m and is instantaneously
at rest. Calculate the time it takes the object to go
(a) from x = 0.320 m to x = 0.160 m and (b) from x = 0.160 m to
x = 0.