A Rotating Flywheel Can Be Used as a Method to Store

question 13

Multiple Choice

A rotating flywheel can be used as a method to store energy.If it is required that such a device be able to store up to a maximum of 2.00 × 10⁶ J when rotating at 400 rad/s,what moment of inertia is required?

• A) 50 kg m²
• B) 25 kg m²
• C) 12.5 kg m²
• D) 6.3 kg m²

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Definitions:

Calcium Carbonate

A chemical compound with the formula CaCO3, commonly found in rocks as the minerals calcite and aragonite and is the main component of pearls and the shells of marine organisms.

Clay

1. Any fine-grained sedimentary particle that is finer than 1/256 mm. 2. A family of finely crystalline, hydrous-silicate minerals with a two- or three-layered crystal structure.

Calcium Carbonate

A chemical compound found in rocks as the minerals calcite and aragonite, and is the primary component of shells of marine organisms, snails, and eggs.

O-Horizon

The uppermost layer of soil, primarily composed of organic matter, including decomposed leaves, twigs, and other plant material.