A spring is hung vertically from a fixed point. A mass 
is hung from the other end of the spring, as illustrated in the figure below.
The mass is displaced downwards and then released. The subsequent motion of the mass is simple harmonic. The variation with time 
of the length 
of the spring is shown in the graph below.
Use data from the graph above to determine, for the motion of the mass:
the angular frequency 
,
the maximum speed,
the magnitude of the maximum acceleration.
.
.
.
