A disk-shaped merry-go-round of radius2.63 m and mass 135 kg rotates freely with an angualr speed of .621rev/s. A 65.4 kg person running tangential to the rim of themerry-go-round at 3.31m/s jumps onto its rim and holds on. Beforejumping on the merry-go-round, the person was moving in the samedirection as the merry-go-round's rim.
What is the final angular speed of the merry-go-round?