A Uniform Disk Has a Mass of 3

question 96

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 /s
• B)1.1 /s
• C)1.3 /s
• D)1.6 /s
• E)1.9 /s

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Definitions:

Class C Hazard Material

A classification for hazardous materials that are primarily corrosive or reactive, posing risks to safety and health if not properly handled.

WHMIS

Workplace Hazardous Materials Information System; a Canadian system providing information on the safe use of hazardous materials at work through labels and safety data sheets.

Phytoremediation

A bioremediation process that uses various types of plants to remove, transfer, stabilize, or destroy contaminants in the soil and groundwater.

Contaminants

Substances that are introduced into an environment where they don't belong, often harmful to organisms, polluting water, air, and soil.