The Attempt: Captured in a Photo

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SUMMARY

The discussion focuses on clarifying the geometry of a physics problem depicted in a diagram. Participants emphasize the need for better labeling of key points (a, b, and c) and the axis (AA'). They suggest that the axis is likely in the plane and propose using the parallel axis theorem as a more effective strategy than calculating angles. The conversation highlights the importance of clear visual representation in problem-solving within physics contexts.

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  • Understanding of basic geometry and coordinate systems
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  • Ability to interpret and analyze diagrams
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Homework Statement
What is the moment of inertia of a triangular lamina of mass m about AA’? The distance of the vertices from the axis AA’ is a,b,c
Relevant Equations
MOI= dmr^2
The attempt is in the photo
 

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Can you try stating the problem better? Where is axis AA'? Is it in the plane? Or coming up vertically out of the plane? Guessing from the provided diagram, it is in the plane and is the y-axis over on the left

Can you label the drawing better? Where are points a, b and c? It looks like it's "a" up top, "b" on the right and "c" on the lower left.

Do you have a strategy in mind? It looks like you are busy calculating angles. I don't think the angles are going to do you any good. Have you thought about the parallel axis theorem, for instance? How might you go about applying that?
 

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