A Wheel Starts from Rest and Has an Angular Acceleration $\alpha$

question 64

Multiple Choice

A wheel starts from rest and has an angular acceleration that is given by $\alpha$ (t) = (6.0 rad/s⁴) t^2. After it has turned through 10 rev its angular velocity is:

• A)63 rad/s
• B)75 rad/s
• C)89 rad/s
• D)130 rad/s
• E)210 rad/s

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Definitions:

External Costs

Costs of a transaction or activity that affect parties who did not choose to incur that cost, often not reflected in the market price.

Social Cost

The total cost to society as a whole, including both private costs incurred by firms or individuals and external costs imposed on others.

Free Riders

A person who receives the benefit of a good without paying for it. Because it is often virtually impossible to restrict the consumption of public goods to those who pay, these goods are subject to free-rider problems.

Public Good

A commodity or service that is provided without profit to all members of a society, either by the government or a private individual or organization.