A disk-shaped merry-go-round of radius 2.93 meter and mass 155 kilogram rotates freely with an angular speed of 0.701 rev/s. A 64.4 kilogram person running tangential to the rim of the merry-go-round at 3.51 meter per second jumps onto 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.
Part A Obtain the final angular speed of the merry-go-round?
(rad/s)