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ch10_2_student - MOMENT OF INERTIA FOR COMPOSITE AREAS...

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MOMENT OF INERTIA FOR COMPOSITE AREAS Today’s Objectives: 1. Apply the parallel-axis theorem. 2. Determine the moment of inertia (MoI) for a composite area. In-Class Activities: Applications Parallel-axis theorem Method for composite areas Examples and questions
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APPLICATIONS Cross-sectional areas of structural members are usually made of simple shapes or combination of simple shapes. Is there a simpler method for determining the MoI of such cross-sectional areas as compared to the integration method? If yes, can you describe the method?
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APPLICATIONS (continued) This is another example of a structural member with a composite cross-area. Design calculations typically require use of the MoI for these cross-sectional areas. Can you describe a simple method to calculate MoI?
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PARALLEL-AXIS THEOREM FOR AN AREA (Section 10.2) This theorem relates the moment of inertia (MoI) of an area about an axis passing through the area’s centroid to the MoI of the area about a corresponding parallel axis
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This note was uploaded on 12/06/2010 for the course CHEM 141 taught by Professor Freeman during the Spring '10 term at Columbia SC.

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ch10_2_student - MOMENT OF INERTIA FOR COMPOSITE AREAS...

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