February 27, 2017

Homework Help: Physics

Posted by Rachel on Thursday, November 19, 2009 at 5:19pm.

A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. The disk has a mass of 240 kg and a radius of 1.4 m. A 33- kg child rides at the center of the merry-go-round while a playmate sets it turning at 0.20rpm. If the child then walks along a radius to the outer edge of the disk, how fast will the disk be turning? (answer must be in rpm)

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