A Particular Motor Can Provide a Maximum Torque of 110

question 76

Multiple Choice

A particular motor can provide a maximum torque of 110 N · m. Assuming that all of this torque is used to accelerate a solid, uniform, cylindrical flywheel of mass 10.0 kg and radius 3.00 m, how
Long will it take for the flywheel to accelerate from rest to 8.13 rad/s?

• A) 4.36 s
• B) 4.03 s
• C) 2.83 s
• D) 3.33 s

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Definitions:

Economies Of Scale

Economies of scale are cost advantages reaped by companies when production becomes efficient, as the cost per unit of output decreases with the increase in scale of operation.

Natural Monopoly

An industry that realizes such large economies of scale that single-firm production of that good or service is most efficient.

Profit-Maximizing Price

The price at which a firm can sell its product to earn the maximum possible profit on those sales.

Marginal Revenue

The additional income from selling one more unit of a good; it is the change in total revenue from an additional unit sold.