Computing the moment of inertia of a compound object is eased by the theorem named:
APerpendicular-arc
BPositional-arm
CProgressive-arc
DParallel-axis
Answer & Solution
Correct answer: D. Parallel-axis
1. The moment about the centre of mass is usually known.
2. Shifting to another parallel axis needs one correction term.
3. That is the parallel-axis theorem.
_Source: OpenStax University Physics Volume 1, Chapter 10, Fixed-Axis Rotation._
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