While Spinning Down from 500

question 20

Multiple Choice

While spinning down from 500.0 rpm to rest, a solid uniform flywheel does 5.1 kJ of work. If the radius of the disk is 1.2 m, what is its mass?

• A) 5.2 kg
• B) 4.4 kg
• C) 6.0 kg
• D) 6.8 kg

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Definitions:

Probability

The measure of the likelihood or chance that a particular event will occur, expressed as a number between 0 and 1.

System

A set of connected elements or components that function together as a complex whole, often described in terms of inputs, processes, outputs, and feedback.

Customer

An individual or organization that purchases goods or services from another entity, typically playing a vital role in the entity's revenue stream.

Little's Law

A mathematical principle in queueing theory stating that, in a stable system, the long-term average number of items in the system is equal to their long-term average arrival rate multiplied by their average time in the system.