Polar Moment of Inertia Relationship
Easypolar moment of inertia
The polar moment of inertia of an area about a point is related to its rectangular moments of inertia by:
- AJ = Ix − Iy
- BJ = Ix + Iy
- CJ = Ix · Iy
- DJ = √(Ix² + Iy²)
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Answer: B. J = Ix + Iy
By the perpendicular axis theorem, J = Ix + Iy for axes through the same point.
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