Calculate Moment of Inertia: Axis of Object in Figure | L, M, m1, m2

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Homework Help Overview

The discussion revolves around calculating the moment of inertia of an object about a specified axis, with variables L, M, m1, and m2 involved. Participants are exploring the application of principles related to moment of inertia in a physics context.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to calculate the moment of inertia using specific formulas involving the masses and dimensions of the object. Some participants question the validity of the attempted formulas and suggest breaking down the components of the moment of inertia for clarity.

Discussion Status

The discussion is active, with participants providing insights into the components of the moment of inertia. There is an ongoing exploration of different interpretations of the problem and the individual contributions to the total moment of inertia.

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dtesselstrom
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Determine the moment of inertia about the axis of the object shown in the figure. Enter your answer in terms of L, M, m1, and m2.
 

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What have you tried so far?

By the way, this belongs in the homework section.
 
ok sorry for posting in wrong section.
Ive tried 1/12(m1+m2+M)*L^2 and 1/12(m1+m2+M)*L^2+1/4*m1*L^2-1/16*m2*L^2
 
Last edited:
The moment of inertia of an object about an axis is just the sum of the moments of inertia of its constituents about that axis; i.e. in this case:
[tex]I=I_{rod}+I_{m1}+I_{m_2}[/tex]

What do you get for these separate moments of inertia?
 

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