Vector Mechanics for Engineers: Statics and Dynamics
12th Edition
ISBN: 9781259638091
Author: Ferdinand P. Beer, E. Russell Johnston Jr., David Mazurek, Phillip J. Cornwell, Brian Self
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 7.2, Problem 7.55P
For the structural member of Prob. 7.53, determine (a) the angle θ for which the maximum absolute value of the bending moment in beam AB is as small as possible, (b) the corresponding value of |M|max. (Hint: Draw the bending-moment diagram and then equate the absolute values of the largest positive and negative bending moments obtained.)
PROBLEM 7.53 Two small channel sections DF and EH have been welded to the uniform beam AB of weight W = 3 kN to form the rigid structural member shown. This member is being lifted by two cables attached at D and E. Knowing that θ = 30° and neglecting the weight of the channel sections, (a) draw the shear and bending-moment diagrams for beam AB, (b) determine the maximum absolute values of the shear and bending moment in the beam.
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PROBLEM 5.108
(a) Using singularity functions, write the equations for the shear and
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maximum value of the bending moment in the beam.
Current Attempt in Progress
The moment acting on the cross section of the T-
beam has a magnitude of 19 kip-ft and is oriented as
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= 9.5 in. and 0 = 70°. Determine
(a) the bending stress at point H.
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(c) the orientation of the neutral axis relative to the
+z axis; show its location on a sketch of the cross
section.
y
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(a) OH =
(b) ok=
(c) B=
MI
IH
TH
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bf
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ksi
ksi
0
5.16 The box beam is made by nailing four 2-in. by 8-in. planks together as
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Chapter 7 Solutions
Vector Mechanics for Engineers: Statics and Dynamics
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Ch. 7.1 - A semicircular rod is loaded as shown. 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