A merry-go-round of disk-shaped having radius 2.23m and mass 165 kg rotates freely with an angular speed of 0.701 rev/s. A person of 63.4 kg running tangential to the rim of the merry-go-round at 3.51m/s jumps to its rim and holds on. Before jumping on the merry-go-round, the person was moving in the similar direction as the merry-go-round's rim.
Evaluate the final angular speed of the merry-go-round?