Four 50-G Point Masses Are at the Corners of a Square

question 52

Multiple Choice

Four 50-g point masses are at the corners of a square with 20-cm sides.What is the moment of inertia of this system about an axis perpendicular to the plane of the square and passing through its center?

• A)1.0 \(\times\) 10^-3 kg · m²
• B)4.0 \(\times\) 10^-3 kg · m²
• C)2.0 \(\times\) 10^-3 kg · m²
• D)8.0 \(\times\) 10^-3 kg · m²
• E)2.8 \(\times\) 10^-3 kg · m²

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Definitions:

Materials Price Variance

The difference between the actual cost of materials purchased and the expected cost based on the standard price.

Materials Quantity Variance

The variance between the actual and projected amounts of materials consumed in manufacturing, multiplied by the unit's standard cost.

Standard Cost

An estimated or pre-determined cost of manufacturing a product, which is used for budgeting and performance evaluation.

Fixed Overhead Volume Variance

The difference between the budgeted and actual fixed overhead costs, attributed to variations in production volume.