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AP Physics 1
6.4 Conservation of Angular Momentum
6.3 Angular Momentum and Angular Impulse
IntermediateMCQConceptual23.7k
A perspective view of a flat circular disk on a horizontal plane. A vertical dashed line indicates the axis of rotation passing through the center of the disk. A curved arrow around the axis indicates an initial angular velocity omega_i. A small square block of mass m is shown suspended in the air directly above the outer rim of the disk, with a small downward arrow indicating its motion toward the disk.
A block of mass m about to land on a rotating disk of radius R.
A uniform disk of mass \(M\) and radius \(R\) is rotating on a horizontal plane about a frictionless vertical axle through its center with an initial angular velocity \(\omega_i\). A small block of mass \(m\) is dropped from a negligible height and sticks to the outer edge of the disk. Which of the following correctly describes the final angular velocity \(\omega_f\) of the disk-block system and provides a correct justification?

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