All questions
AP Physics C: Mechanics
6.4 Conservation of Angular Momentum
6.1 Rotational Kinetic Energy
5.4 Rotational Inertia
Multi-Unit
AdvancedMCQMathematicalProportional Analysis25.4k
A physical setup diagram shown in perspective view. A horizontal circular disk of radius \(R\) is mounted on a vertical axle passing perpendicularly through its center. The axle is represented by a vertical line extending both above and below the center of the disk. A curved counterclockwise arrow near the axle indicates rotation with angular speed \(\omega_0\). A dashed radial horizontal line segment extends from the center of the disk's top face to a point at distance \(r\) from the axle, labeled \(r\). Directly above this point at distance \(r\), a small spherical lump of clay of mass \(m\) is shown with a downward straight arrow indicating it is falling vertically toward the disk. The radius of the disk is indicated by a dimension line along the top surface from the center to the outer rim labeled \(R\). No other labels, lines, text, or axes appear.
A lump of clay of mass \(m\) dropped vertically onto a rotating disk of mass \(M\) and radius \(R\).
A uniform solid disk of mass \(M\) and radius \(R\) rotates horizontally about a frictionless, fixed vertical axle through its center with initial angular speed \(\omega_0\).

A small lump of clay of mass \(m\) is dropped vertically from a negligible height onto the disk and sticks to its surface at a radial distance \(r\) from the axle.

Which of the following expressions represents the fraction of the initial kinetic energy of the disk that is converted into thermal energy during the collision?

Log In to Continue

Accounts are free! Log in to try this question, see explanations, save progress, and more!

Similar Questions

Tools for a 5

The Quiz Lab library of AP Physics quizzes AP aligned mock tests to help you get a 5. With grading, adaptive explanations, and more. Find a Quiz Find, solve, and grade every AP FRQ ever. Find an FRQ Stuck on AP Physics C: Mechanics? Get unstuck with an AP specialist.1 to 1 tutors who know the exam inside out. Understand weeks of material in a single session.Find a Tutor Learn AP Physics from scratch, quickly. This is the only course you'll need for the year. A self-paced course with everything you need to get a 5. Trusted by over 15,000 students and 200+ schools. Learn fast, or we'll refund your purchase, backed by our 100% satisfaction guarantee. Explore the Course