A Wheel Rotating About a Fixed Axis Has a Constant

question 17

Multiple Choice

A wheel rotating about a fixed axis has a constant angular acceleration of 4.0 rad/s2. In a 4.0-s interval the wheel turns through an angle of 80 radians. Assuming the wheel started from rest, how long had it been in motion at the start of the 4.0-s interval?

• A)2.5 s
• B)4.0 s
• C)3.5 s
• D)3.0 s
• E)4.5 s

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Definitions:

Particles

Small localized objects to which can be ascribed several physical or chemical properties such as volume or mass.

Osmoregulation

The process by which living organisms control the concentration of water and electrolytes in their bodies to maintain homeostasis.

Concentration

The amount of a substance in a specific volume of solution, often measured in moles per liter.

Water

A ubiquitous chemical substance composed of hydrogen and oxygen, essential for all known forms of life and used in a wide range of industrial processes.