Select the most appropriate answer for the following questions: 1a) The members of a truss are straight and are considered A. Two force members B. Bending members C. Two force and bending members D. None of the above 1b) Moment of inertia is a structural property of material that indicates the ______ of a beam A. Ductility B. Stiffness C. Curvature D. None of the above
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6. What happens to the maximum stress in a beam if the bending moment increases? A) It becomes smaller B) It becomes larger C) it makes the neutral axis longer D) It increases the moment of inertia 8. What's the main difference between a neutral surface and a neutral axis? A) A neutral surface is for 3D objects and a neutral axis is for 2D objects B) A neutral surface is for 2D objects, and a neutral axis is for 3D objects C) A neutral surface is farther away from the bend radius than a neutral axis D) A neutral surface is closer to the bend radius than a neutral axis 13. Shear stress and strain are calculated A) between layers in the cross-section B) from end to end C) in circular shafts only D) internal to layers in the cross-section 17. What happens to the neutral xis if the bending radius increases? A) It moves B) It gets longer C) It get shorter D) It becomes indeterminate
Adi S.
The beam cross section is subjected to the internal unsymmetric bending moment M. Determine the bending stress at corner D on the cross section given: M = 70 k-in θ = 75 deg a = 3 in Bending stress at corner D = Number ksi Answer must include two decimal places. Answer must include the correct sign for compression or tension.
Sri K.
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