The Attempt: Captured in a Photo

  • Thread starter Paris Geller
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In summary, the conversation is about clarifying the problem and labeling the given diagram. The participants discuss the location of axis AA' and points a, b, and c on the diagram. The suggestion to use the parallel axis theorem is brought up as a possible strategy for solving the problem.
  • #1
Paris Geller
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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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  • #2
Welcome to Physics Forums.

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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