An Object Is Made Up of Three Masses Connected by Massless

question 99

Multiple Choice

An object is made up of three masses connected by massless rods of fixed length. Mass A is located at (30.0 cm, 0 cm) and has a mass of 250 grams, mass B is located at (0 cm, 30.0 cm) and has a mass of 350 grams, mass C is located at (-30.0 cm, 0 cm) and has a mass of 450 grams. What is the moment of inertia of this object about an axis perpendicular to the x-y plane and passing through the origin?

• A) 0.0945 kg m²
• B) 0.315 kg m²
• C) 0.185 kg m²
• D) 0.0135 kg m²
• E) 0.0450 kg m²

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Definitions:

Predictive Validity

How well a score from a test or scale indicates anticipated performance in tasks or outcomes that are related.

IQ Test

A standardized assessment used to measure human intelligence and cognitive abilities in relation to an age-group norm.

Correlation

A statistical measure that indicates the extent to which two or more variables fluctuate together, showing the strength and direction of a relationship.

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The consistency and stability of test scores or measurements over time or across different occasions.