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Bubba (m=100kg) and Sally (m=60kg) are playing on a merry-go-round. Treat the merry-go-round as a disk...

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Physics

Bubba (m=100kg) and Sally (m=60kg) are playing on amerry-go-round. Treat the merry-go-round as a disk with mass 100 kgand radius 1.3 m. Both Bubba and Salley are at the edge of the diskwhen the disk is rotating at .25 revolutions per second. SuppseBubba moves inward so that he is now exactly at the center. Treatthe two children as point masses. Assuming there is no externaltorques or forces,

A) What is the new rotational speed of the merry-go-round?

B) How much work is done? Who, what did this work?

Answer & Explanation Solved by verified expert
3.7 Ratings (312 Votes)
here mass of Bubba m1 100 kg mass of Sally m2 60 kg radius r 13 m mass of merrygoround M 100 kg initial angular speed w0 025 revs 157    See Answer
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