1. The problem statement, all variables and given/known data In the diagram, Disk 1 has a moment of inertia of 4.40 kg · m2 and is rotating in the counterclockwise direction with an angular speed of 7.50 rad/s about a frictionless rod passing through its center. A second disk rotating clockwise with an angular speed of 9.50 rad/s falls from above onto Disk 1. The two then rotate as one in the clockwise direction with an angular speed of 1.40 rad/s. Determine the moment of inertia of Disk 2. 2. Relevant equations L=Iω 3. The attempt at a solution I have no idea how to start the problem.