MIT OpenCourseWare http://ocw.mit.edu 3.22 Mechanical Properties of Materials Spring 2008 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms.Which cross-section do I choose for moment of inertia, I? In equilibrium, the beam resists any bending due to applied loads, so we choose the cross-section that is perpendicular to the axis of that intended bending: P [N] axis of
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