with radius r=0.20m is rotating at 1.0 radians per second. If you drop a rock mass 
onto the disc a distance 0.10m from the center, what is the new angular velocity of the system?
A disc of mass with radius r=0.20m is rotating at 1.0 radians per second. If you drop a rock mass onto the disc a distance 0.10m from the center, what is the new angular velocity of the system?
