A uniform disk with a mass of 840 g and radius 170 cm is, Ask an Expert

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A uniform disk with a mass of 840 g and radius 17.0 cm is rotating on frictionless bearings with an rotational speed of 18.0 Hz when Jill drops a 100-g clod of clay on a point 7.10 cm from the center of the disk, where it sticks. What is the new rotational speed of the disk?

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