Mathematics · Mechanics of Materials - Bending Stress
A composite T-section beam is subjected to a bending moment of 11 kN-m around the horizontal neutral axis which develops tension below the neutral axis. Find the bending stresses at both extreme fibers of the cross-section of the beam. The centroidal distance is 75 mm from the top and 125 mm from the bottom edges. Take the moment of inertia equal to 55 × 106 mm4.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Bending stress at top fiber = 25 MPa (tension) and bending stress at bottom fiber = 15 MPa (compression)
- 2Bending stress at top fiber = 15 MPa (compression) and bending stress at bottom fiber = 25 MPa (tension)✓
- 3Bending stress at top fiber = 25 MPa (compression) and bending stress at bottom fiber = 15 MPa (tension)
- 4Bending stress at top fiber = 15 MPa (tension) and bending stress at bottom fiber = 25 MPa (compression)
Correct answer
Bending stress at top fiber = 15 MPa (compression) and bending stress at bottom fiber = 25 MPa (tension)
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