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HippoCampus Physics 7 Online
OpenStudy (anonymous):

A merry -go-round has a mass of 310 kg and is made of a solid steel disk 4.0 meters in diameter. The mass spins at an initial angular speed of 12 rpm. After which, four 150-lb students jump on the disk equal distances apart from each other. What is the moment of inertia of the merry-go-round?

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