A Majorette Takes Two Batons and Fastens Them Together in the Middle

question 45

Multiple Choice

A majorette takes two batons and fastens them together in the middle at right angles to make an "x" shape.Each baton was 0.90 m long and each ball on the end is 0.20 kg.(Ignore the mass of the rods. ) What is the moment of inertia if the arrangement is spun around an axis through the center perpendicular to both rods?

• A) 0.036 kg·m²
• B) 0.081 kg·m²
• C) 0.041 kg·m²
• D) 0.162 kg·m²
• E) ​0.180 kg·m²

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Definitions:

Marginal Cost

The increase in cost that arises from producing one additional unit of a good or service.

Output

The quantity of goods or services produced in a given time period by a firm, industry, or country.

Fixed Costs

Costs that do not change with the level of output or production, such as rent, salaries, or loan payments.

Variable Costs

Costs that change in proportion to the amount of goods or services produced.