A Uniform Disk Has a Mass of 3

question 16

Multiple Choice

A uniform disk has a mass of 3.7 kg and a radius of 0.40 m. The disk is mounted on frictionless bearings and is used as a turntable. The turntable is initially rotating at 30 rpm. A thin-walled hollow cylinder has the same mass and radius as the disk. It is released from rest, just above the turntable, and on the same vertical axis. The hollow cylinder slips on the turntable for 0.20 s until it acquires the same final angular velocity as the turntable. What is the final angular momentum of the system?

• A) 0.93 kg∙m²/s
• B) 1.1 kg∙m²/s
• C) 1.3 kg∙m²/s
• D) 1.6 kg∙m²/s
• E) 1.9 kg∙m²/s

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Definitions:

Childhood Experiences

Events, interactions, and relationships during early years of life that significantly influence one's development and personality.

Individual Psychology

A psychological theory and therapy approach focusing on the uniqueness of each person and the importance of social context in personality development, introduced by Alfred Adler.

Depth Psychology

A branch of psychology that focuses on the unconscious mind, and how deep-seated thoughts and feelings can influence behavior and personality.

Gestalt Psychology

A psychological approach that emphasizes the human mind's tendency to perceive patterns and wholes in sensory information rather than just individual components.