- #1
mbigras
- 61
- 2
Homework Statement
There is the moment of inertia about an x and a y-axis named, [itex]I_{x}, I_{y}[/itex]. Then there is the moment of inertia about the centroidal x and y-axis named, [itex]\overline{I}_{x}, \overline{I}_{y}[/itex]. Often we can look up these values in a table (like the figure included) and apply another idea called the parallel-axis therom to find moments about different axes. My question is: What is [itex]I_{y}[/itex] and [itex]\overline{I}_{y}[/itex] for the triangle? It seems to be missing from the picture. This also could illustrate my lack of understanding about what a moment of inertia really is.
Homework Equations
[tex] I = \overline{I} + A*d^{2}[/tex]
where, [itex]A[/itex] is the area and [itex]d[/itex] is the distance between parallel axes.