The 3 masses rotate around the x-axis as shown. The rod has a length of 7.0 m, a mass of 1.0kg and rotates around a point 3.0m below the top of the rod. a. b. What is the moment of inertia of the 3-mass and rod system? If the system is rotating with an angular speed of 2.0 rad/s, what is the rotational kinetic energy? 4.00 kg y= 3.00 m x 0 2.00 kg y=-2.00 m 3.00 kg y= -4.00 m