Part B - Moment of inertia of beam ABC Determine the moment of inertia I of I-beam ABC. Recall that in an I-beam, the flanges are the horizontal top and bottom sections and the web is the vertical section between the two flanges. Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) I = |μA Value Submit Units ? Part C - Bending moment at section a-a in beam ABC Determine the absolute value of the bending moment in the beam at section a-a which is 6 in. from the wall. Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s)

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Part B - Moment of inertia of beam ABC
Determine the moment of inertia I of I-beam ABC. Recall that in an l-beam, the flanges are the horizontal top and bottom sections and the web is the vertical section between the two flanges.
Express your answer to three significant figures and include the appropriate units.
View Available Hint(s)
I =
Submit
|M| =
Value
µÅ
Part C - Bending moment at section a-a in beam ABC
Submit
Determine the absolute value of the bending moment in the beam at section a-a which is 6 in. from the wall.
Express your answer to three significant figures and include the appropriate units.
► View Available Hint(s)
0
om
O max
μA
Units
Value
ΠΫΠΙ ΑΣΦ
VE
?
Units
Part D - Absolute maximum bending stress in section a-a on beam ABC
Determine the absolute maximum bending stress in the cross section at cut a-a using the flexure formula.
Express your answer in psi to three significant figures.
View Available Hint(s)
↓↑
?
vec
?
psi
Transcribed Image Text:Part B - Moment of inertia of beam ABC Determine the moment of inertia I of I-beam ABC. Recall that in an l-beam, the flanges are the horizontal top and bottom sections and the web is the vertical section between the two flanges. Express your answer to three significant figures and include the appropriate units. View Available Hint(s) I = Submit |M| = Value µÅ Part C - Bending moment at section a-a in beam ABC Submit Determine the absolute value of the bending moment in the beam at section a-a which is 6 in. from the wall. Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) 0 om O max μA Units Value ΠΫΠΙ ΑΣΦ VE ? Units Part D - Absolute maximum bending stress in section a-a on beam ABC Determine the absolute maximum bending stress in the cross section at cut a-a using the flexure formula. Express your answer in psi to three significant figures. View Available Hint(s) ↓↑ ? vec ? psi
Learning Goal:
To determine an I-beam's maximum bending moment, moment of inertia using the parallel-axis theorem, and the maximum stress at a given location using the flexure formula.
As shown, I-beam ABC supports a sign that weighs S = 30 lb . The I-beam is 24 in. long and is further supported by a rod that is attached 18 in. from the wall. Assume that all forces acting on the I-beam act
along its centroid and that the I-beam's weight is negligible. Let the dimensions of the I-beam be w = 4 in., g = 0.8 in., h = 2.9 in., j = 1 in., c = 6 in.
c
A
·a
b
B
Part A - Free-body diagram of beam ABC
S
C
H
j-
W
h
Before the problem can be analyzed, a free-body diagram must be drawn to understand the forces and reactions that act on the I-beam. Draw the free-body diagram of beam ABC.
A free-body diagram includes the forces acting on the object, in this case the beam. Start your vectors at the black dots. You will not be graded on vector length. Ignore all reaction forces in the
x direction, and assume all vertical reaction forces point upward.
► View Available Hint(s)
Transcribed Image Text:Learning Goal: To determine an I-beam's maximum bending moment, moment of inertia using the parallel-axis theorem, and the maximum stress at a given location using the flexure formula. As shown, I-beam ABC supports a sign that weighs S = 30 lb . The I-beam is 24 in. long and is further supported by a rod that is attached 18 in. from the wall. Assume that all forces acting on the I-beam act along its centroid and that the I-beam's weight is negligible. Let the dimensions of the I-beam be w = 4 in., g = 0.8 in., h = 2.9 in., j = 1 in., c = 6 in. c A ·a b B Part A - Free-body diagram of beam ABC S C H j- W h Before the problem can be analyzed, a free-body diagram must be drawn to understand the forces and reactions that act on the I-beam. Draw the free-body diagram of beam ABC. A free-body diagram includes the forces acting on the object, in this case the beam. Start your vectors at the black dots. You will not be graded on vector length. Ignore all reaction forces in the x direction, and assume all vertical reaction forces point upward. ► View Available Hint(s)
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