Physics

Problem

A uniform disk of mass

4.0\,\text{kg}

and radius

0.25\,\text{m}

spins freely at

6.0\,\text{rad/s}

about its central axle. A

0.50\,\text{kg}

lump of clay is gently dropped onto the rim and sticks to the disk. Neglect any external torques. What is the angular speed of the disk–clay system immediately after the clay sticks? a)

6.0\,\text{rad/s}

3.0\,\text{rad/s}

4.8\,\text{rad/s}

5.3\,\text{rad/s}

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