3. (25 Points) The following shaft contains three rotating disks. Disk B has a radius twice as large as the other two disks. Disk A & C each having a radius of 5 mm. It is desired to balance the shaft by placing weights on the outer edge of the disk A and C. What are the balance weights needed to dynamically balance the shaft, if the imbalance (5 kg-mm) is located on the top of disk B? Imbalance A B 10 mm 20 mm C X