A String Is Wrapped Around a Pulley of Radius 0

question 12

Multiple Choice

A string is wrapped around a pulley of radius 0.20 m and moment of inertia 0.40 kg . m². The string is pulled with a force of 28 N. What is the magnitude of the resulting angular acceleration of the pulley?

• A)22 rad/s²
• B)14 rad/s²
• C)68 rad/s²
• D)0.55 rad/s²
• E)8.0 rad/s²

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Definitions:

Intermediate Value

A mathematical concept stating that a continuous function must take on every value between any two values it assumes at any points in the domain.

Squared Values

Numbers that have been multiplied by themselves.

Cost-To-Benefit Analysis

A systematic approach to estimating the strengths and weaknesses of alternatives in terms of costs and benefits.

Numeric Ratio

A comparative figure showing the relative sizes of two quantities expressed as a quotient.