| Practice Problem 6-5 (a) |
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Given: A beam with triangular cross-section (b = 4 cm, h = 5 cm) and length L = 5 m is subjected to a point load at its mid-span of P = 6.0 kN. (Note that the neutral axis is located h/3 cm from the bottom of the beam.) Req'd: |
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Solution: The moment of inertia for a triangular beam about its centroid is given by: I = b·h3/36 = (4 cm)(5 cm)3/36 = 13.89 cm4 |
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