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aaronfue
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Homework Statement
I was given a formula sheet that shows the moment of inertia equations for three shapes: rectangle, circle, and triangle.
Homework Equations
There seems to be two sets of MOI equations.
Here are the rectangular equations:
Rectanglular:
Ix=[itex]\frac{bh^3}{3}[/itex], Iy=[itex]\frac{hb^3}{3}[/itex]
[itex]\bar{I}[/itex]x=[itex]\frac{bh^3}{12}[/itex], [itex]\bar{I}[/itex]y=[itex]\frac{hb^3}{12}[/itex]
What is the difference between the two, besides the denominators and order of variables? How can I remember which ones to use and when to use them?
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