When We Apply the Energy Conversation Principle to a Cylinder

question 39

Multiple Choice

When we apply the energy conversation principle to a cylinder rolling down an incline without sliding, we exclude the work done by friction because:

• A)there is no friction present
• B)the angular velocity of the center of mass about the point of contact is zero
• C)the coefficient of kinetic friction is zero
• D)the linear velocity of the point of contact (relative to the inclined surface)is zero
• E)the coefficient of static and kinetic friction are equal

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Definitions:

Nonemployee Agent

A nonemployee agent typically contracts with the principal to produce a result and determines for himself or herself how that result will be accomplished. Also called an independent contractor.

Independent Contractor

An individual or entity contracted to perform work for another entity as a non-employee, often with greater control over how the work is completed.

Restatement (Third)

A reference to the third update of the Restatements of the Law, which are collections of common law judicial decisions in the United States, organized by subject.

Agency Coupled

A legal relationship where an agent has an irrevocable right to represent the principal due to an interest the agent has in the subject of the agency.