A disk-shaped merry-go-round of radius 2.77 meter and mass 150 kilogram rotates freely with an angular speed of 0.653 rev/s. A 64.9 kilogram person running tangential to the rim of the merry-go-round at 3.02 m/s 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.
Compute the initial kinetic energy for this system.
Evaluate the final kinetic energy for this system.