Question
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.596 rev/s. A 59.4 kg person running tangential to the rim of the merry-go-round at 3.68 m/s jumps onto its rim and holds on. Before jumping on the merry-go-round, the person was moving in the same direction as the merry-go-round's rim.
(a) Does the kinetic energy of the system increase, decrease, or stay the same when the person jumps on the merry-go-round?
(b) Calculate the initial and final kinetic energies for this system.
Ki = kJ
Kf = kJ
I will be happy to critique your efforts. On the first question, think out what the system is. Does the system include the person running?
(a) Does the kinetic energy of the system increase, decrease, or stay the same when the person jumps on the merry-go-round?
(b) Calculate the initial and final kinetic energies for this system.
Ki = kJ
Kf = kJ
I will be happy to critique your efforts. On the first question, think out what the system is. Does the system include the person running?