Transcribed image text: Cadet Standards SS Sportsurge 10. DETAILS MY NOTES Amela TEACHER 0:09:52 Upper D hing Dom Dink Two flat solid disks are free to rotate on a frictionless vertical axis as shown. The upper disk is initially rotating at angular speed - 13 rad/s and the to tower disk is initially at rest. The upper disk is dropped onto the lower disk and the two begin rotating together an power PE Devic a) 17.5 pts) The upper disk has an angular momentum before it is dropped of Livor - 15 kg mº/s and a radius of Rupper -0.25 m. What is the mass of the upper disk? 7.5 b) 17.5 pts) The lower disk has a moment of inertia of lower - 3 kg m? What is the final angufar velocity of the two disks after the upper disk is dropped onto the lower? 12 rad/s c) t5 pts) Which of the expressions below would represent the final kinetic energy of the system of two rotating disks? .) K = (upper + howay b) K = (upper + hower),? c) Kuper + lwwer),