The box beam is made by nailing four 2-in. by 8-in. planks together as shown. (a)...
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The box beam is made by nailing four 2-in. by 8-in. planks together as shown. (a) Show that the moment of inertia of the cross-sectional area about the neutral axis is 981.3 in.4. (b) Given that wo = 300 lb/ft, find the largest allowable force P if the bending stress is limited to 1400 psi. Wo amma -9 ft B -3 ft FIG. P5.16 C 8 in.- 2 in. 8 in. 2 in. The box beam is made by nailing four 2-in. by 8-in. planks together as shown. (a) Show that the moment of inertia of the cross-sectional area about the neutral axis is 981.3 in.4. (b) Given that wo = 300 lb/ft, find the largest allowable force P if the bending stress is limited to 1400 psi. Wo amma -9 ft B -3 ft FIG. P5.16 C 8 in.- 2 in. 8 in. 2 in.
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