What is the distance from each ball to the center of rotation now? 

               d  =  5 m / cos(30 degrees)  =  5.77 m


  What's the moment of inertia of the triangle spun
        around this point? 

               I  =  300 kg*m^2


  What is the KE of the structure if it spins at
        12 degrees per second? 

                          12 deg     2 pi rad
               omega  =  -------- * ----------  =  0.209 rad/s
                            s          360 deg


               KE     =  0.5 * I * omega^2      =  6.58  J



  How many RPMs are required to give the structure
        a kinetic energy of 1000 Joules? </LI>


               1000 J  =  0.5 * I * omega^2


          --->   omega =  sqrt(  (2 * 1000 J) / I  )

                       =   2.58  rad/s

                       =   24.7  RPM