i. A record is spinning on a turntable at 10 rev/s. A non-rotating rod of equal mass is drooped onto it from negligible height. The rods length equals the diameter of the record. They begin to turn as one, with their centers coincident. ii. What is the final rate of revolution in rev/s? iii. What is r, the ratio of the final to initial kinetic energy of the system? iv. Can you use energy conservation