Mechanics of Materials
11th Edition
ISBN: 9780137605460
Author: Russell C. Hibbeler
Publisher: Pearson Education (US)
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Textbook Question
Chapter 11.2, Problem 13P
Determine its height h so that it simultaneously reaches its allowable bending stress. σallow = 1.50 ksi and an allowable shear stress of τallow.= 50 psi. Also, what is the maximum load P that the beam can then support?
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Chapter 11 Solutions
Mechanics of Materials
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- If the beam is made of material having an allowable tensile and compressive stress of (sallow)t = 125 MPa and (sallow)c = 150 MPa, respectively, determine the maximum moment M that can be applied to the beam.arrow_forwardIf the allowable tensile and compressive stress for the beam are (sallow)t = 2 ksi and (sallow)c = 3 ksi, respectively, determine the maximum moment M that can be applied on the cross section.arrow_forwardIf the internal moment acting on the cross-section is 800 N.m, determine the maximum tensile and compressive bending stresses acting in the beam. Sketch the stress-distribution acting on the cross-section.arrow_forward
- If the beam is made from a material having an allowable tensile and compressive stress of (Callow), = 125 MPa and (Callow)c = 150 MPa, respectively, determine the maximum allowable internal moment M that can be applied to the beam.arrow_forwardIf the intensity of the load w = 15 kN>m, determine the absolute maximum tensile and compressive stress in the beam.arrow_forwardIf the beam is subjected to an internal moment of M = 2 kip # ft, determine the maximum tensile and compressive stress in the beam. Also, sketch the bending stress distribution on the cross section.arrow_forward
- Q1/ A composite beam is made of wood and reinforced with steel strap located on its bottom side. It has the cross-sectional area shown in fig. if the beam is subjected to a bending moment of M=2kN.m, determine the normal stress at wood and steel. Take Ew=12Gpa and Est=200Gpa. 150mm Wood en 20mm Steel 150mmarrow_forwardFind the second moment of area, the location of the neutral axis, and the distances from the neutral axis to the top and bottom surfaces. Consider that the section is transmitting a positive bending moment about the z axis, Mz, where M₂ = 10 kip-in if the dimensions of the section are given in ips units, or M₂ = 1.13 kN·m if the dimensions are in Sl units. Determine the resulting stresses at the top and bottom surfaces and at every abrupt change in the cross section. From the figure, с - 12.5 B A y I 50 100 75 12.5- 12.5 25 D 100 The area is determined to be 3750 mm² The distances from the neutral axis to the top and bottom surfaces are determined to be 57.292 The second moment of area is determined to be 4.293 x 106 mm4. mm and 42.708 ✪ mm.arrow_forwardFind the second moment of area, the location of the neutral axis, and the distances from the neutral axis to the top and bottom surfaces. Consider that the section is transmitting a positive bending moment about the z axis, Mz, where M₂ = 10 kip-in if the dimensions of the section are given in ips units, or M₂ = 1.13 kN·m if the dimensions are in Sl units. Determine the resulting stresses at the top and bottom surfaces and at every abrupt change in the cross section. From the figure Z 1 in 112 in y in → ← ¹ in 12 in D C B A ++ in The area is determined to be 2.0625 in². The distances from the neutral axis to the top and bottom surfaces are determined to be 0.858 x in and The second moment of area is determined to be 0.447 in 4. 1.017 xin.arrow_forward
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