A Light-Weight Potter's Wheel, Having a Moment of Inertia Of 24

question 10

Multiple Choice

A light-weight potter's wheel, having a moment of inertia of $24 \mathrm {~kg} \cdot \mathrm { m } ^ { 2 }$ is spinning freely at 40.0 rpm. The potter drops a small but dense lump of clay onto the wheel, where it sticks a distance 1.2 m from the rotational axis. If the subsequent angular speed of the wheel and clay is 32 rpm, what is the mass of the clay?

• A) 4.2 kg
• B) 2.8 kg
• C) 3.7 kg
• D) 4.6 kg

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