'''
 Name : 

 PHYS 114 - Rec 2
 Moment of Inertia -

     Calculate the moment of inertia of a uniform rod with
     mass = 1kg and length of 1m around different points.
 
  1] Input a point of rotation, x from the user. We will
     calculate the moment of inertia around this point.
     x should range from [0,1] (the point 0.5 is in the
     center of the rod).

  2] By hand, calculate analytically what the moment of
     inertia is and print this value to the screen.

  3] Calculate the integral by finite sums and output this number,
     using 100 steps intervals.

     Pseudo-code to integrate f(x):
     a] divide x into N intervals
     b] for each x_i in this interval, evaluate f( x_i )
     c] add up all these terms as an approximation to the integral

  4] (optional) How does I (the moment of inertia) vary as a
     function of x?

'''