A mass is attached to the end of a spring and set into
oscillation on a horizontal frictionless surface by releasing it
from a stretched position. The position of the mass at any time is
described by x = (7.0cm)cos[2pie(t)/(3.78s)]. Determine the
following
A. period of the motion (s)
B. frequency of the oscillations (Hz)
C. first time the mass is at the position x = 0 (s)
D. the first time the mass is at the site of maximum compression
of the spring (s)