A mass of 
is suspended from a fixed point by means of a spring, as illustrated in the figure below.
The stationary mass is pulled vertically downwards through a distance of 
and then released. The mass is observed to perform simple harmonic motion with a period of 
. The mass is released at time 
. For the oscillations of the mass,
calculate the angular frequency 
,
determine numerical equations for the variation with time 
of
the displacement 
in 
,
the speed 
in 
.
.
