A Wheel Is Rotating Freely with an Angular Speed of 20

question 47

Multiple Choice

A wheel is rotating freely with an angular speed of 20 rad/s on a shaft whose moment of inertia is negligible.A second identical wheel,initially at rest,is suddenly coupled to the same shaft.The angular speed of the coupled wheels is

• A)10 rad/s
• B)14 rad/s
• C)20 rad/s
• D)28 rad/s
• E)40 rad/s

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Definitions:

Dermal Gills

Respiratory structures in some aquatic animals that allow for gas exchange directly through the skin.

Book Lungs

Respiratory organs in certain arachnids, such as spiders and scorpions, consisting of stacked plates for gas exchange.

Operculum

In bony fishes, a protective flap of the body wall that covers the gills.

Swim Bladders

Gas-filled sacs in fish that help maintain buoyancy in the water column.