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July 30, 2014

Homework Help: physics

Posted by john on Monday, November 23, 2009 at 1:24pm.

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 210 kg and a radius of 1.8 m. A 35- kg child rides at the center of the merry-go-round while a playmate sets it turning at 0.10rpm. If the child then walks along a radius to the outer edge of the disk, how fast will the disk be turning (in rpm - but enter no unit)?

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