A Disk Has a Moment of Inertia of 3

question 18

Multiple Choice

A disk has a moment of inertia of 3.0 *10^-4 kg·m² and rotates with an angular speed of 3.5 rad/sec. What net torque must be applied to bring it to rest within 3.7 s?

• A) 4.6 * 10^-4 N·m
• B) 7.5 * 10^-4 N·m
• C) 3.5 *10^-4 N·m
• D) 2.8 * 10^-4 N·m

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Definitions:

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An American inventor and businessman known for developing many devices that greatly influenced life around the world, including the phonograph and the electric light bulb.

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A leading American labor organization in the 19th century that advocated for the rights of workers, including promoting an eight-hour work day and the abolition of child labor.

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