- #1
Moment of Inertia: Solve Your Problem Now
- Thread starter iNCREDiBLE
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Homework Help Overview
The discussion revolves around the concept of moment of inertia, specifically how to approach a problem related to its calculation. Participants are exploring the definitions, formulas, and implications of moment of inertia in relation to different shapes.
Discussion Character
- Exploratory, Conceptual clarification, Mathematical reasoning, Assumption checking
Approaches and Questions Raised
- Participants are attempting to identify relevant formulas and definitions related to moment of inertia. Some express uncertainty about where to start and how to apply the formulas correctly. There are discussions about the impact of shape and reference points on moment of inertia calculations.
Discussion Status
There is an ongoing exchange of ideas, with some participants offering hints and guidance on understanding the definition of moment of inertia. Others are questioning the correctness of calculations presented and seeking further clarification on the reasoning behind the approaches taken.
Contextual Notes
Some participants mention the need to avoid using specific numbers in explanations, suggesting a focus on symbolic representation to clarify reasoning. There is also a reference to the potential relevance of Steiner's Theorem or the Parallel Axis Theorem, indicating that these concepts may be part of the discussion.
- #2
whozum
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Give us some of your thoughts.
- #3
iNCREDiBLE
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whozum said:
Well I I don't know where to start and what formula to use. As far as I can tell the area is 6x3 = 18 sq ft.
- #4
HallsofIvy
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Okay, here are some hints: What is the DEFINITION of "moment of inertia"? What formulas do you know relating to moment of inertia?
- #5
jackson
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u should actually try and understnd the definition of moment inertia before attempting the question. as u know the I, moment of inertia is affected by the shape of the solid and also at what point it is being referred to, so i had reckon u to understand the definition b4 attempting it.
- #6
iNCREDiBLE
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The understanding tends to come afterwards (for me). The surface = one rectangel + two triangles... For the rectangle I = 4*3^3/12 = 9. The two triangles I = 2(2*3^3/12) = 9. So my answer is 18 ft^4. But is this a correct solution?
- #7
iNCREDiBLE
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Please, can somebody help me & explain it to me... 
- #8
arildno
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Dearly Missed
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Could you make a more thourough post on how you got those "answers".
And please, do not use numbers, but symbols.
That makes it easier for us to spot where you've made any mistakes.
And please, do not use numbers, but symbols.
That makes it easier for us to spot where you've made any mistakes.
- #9
Pyrrhus
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Are you familiar with Steiner's Theorem or Parallel axis Theorem?