Moment of inertia of a triangle

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SUMMARY

The moment of inertia of a triangle is not typically presented along the y-axis in standard texts, as the y-axis is considered arbitrary in many contexts. However, every geometric shape, including triangles, possesses a second moment of inertia about any axis, including the y-axis. This principle is rooted in the fundamental definitions of moment of inertia, which apply universally across shapes. Illustrations can aid in understanding the concept better.

PREREQUISITES
  • Understanding of basic mechanics and structural engineering principles
  • Familiarity with the concept of moment of inertia
  • Knowledge of centroidal axes and their significance
  • Ability to interpret geometric illustrations and diagrams
NEXT STEPS
  • Research the calculation of moment of inertia for various geometric shapes
  • Explore the concept of centroidal moment of inertia in detail
  • Learn about the parallel axis theorem and its applications
  • Study examples of moment of inertia calculations for triangles and other polygons
USEFUL FOR

Students and professionals in mechanical engineering, civil engineering, and physics who are studying the properties of geometric shapes and their applications in structural analysis.

jayborre
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Guys,

In most books, why is it that triangles doesn't have moment inertia along the y-axis as well as the centroidal moment of inertia along the y-axis.

Thank you and GOD bless

Regards,
Jay
 
Engineering news on Phys.org
y-axis is kind of arbitrary, can you provide an illustration or anything? In theory, any shape has a Second Moment of Inertia about any axis.
 

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