Computer · Strength of Materials
A hollow rectangular section has external dimensions 'B × D' and internal dimensions 'b × d'. A channel section is formed by shifting one vertical web of the hollow rectangle to the opposite side. This operation changes the symmetry about the y-y axis, but the section remains symmetric about the horizontal centroidal axis x-x. Which of the following expressions gives the moment of inertia of this channel section about the x-x axis?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Ixx = 112(BD3 + bd3)
- 2Ixx = 112(BD3 - bd3)✓
- 3Ixx = 112(B3D - b3d)
- 4Ixx = 16(BD3 - bd3)
Correct answer
Ixx = 112(BD3 - bd3)
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