a. find the area and vertical distances from the bottom edge of the cross-section to the centoid of rectanglesb. Find Iz, the area moment of inertia about the z centroidal axis for the cross-section. c. Find QH, the first moment of area about the z centroidal axis for the entire area below point H. This area has width 2c2c and height tt. Also, find QK, the first moment of area about the z centroidal axis for the entire area above point K with width b and height t.d. Determine the magnitudes of the shear stress at point H and the shear stress at point K.e. Find Qmax, the maximum first moment of area about the z centroidal axis for any point in the cross section, and τmax, the maximum horizontal shear stress magnitude in the cross section. The internal shear force at a certain section of a steel beam isV = 7.2 kN. The beam cross section shown in the figure hasdimensions of b = 136 mm, c = 33 mm, d = 66 mm, and t = 6mm. Determine:(a) the shear stress at point H.(b) the shear stress at point K.(c) the maximum horizontal shear stress in the cross section.by|KdHLedLed Break the cross section into five rectangles, as shown. It isseen that the two labeled with a (1) are identical, and the twolabeled with a (2) are identical. Find A, the area of rectangles(1), and y,, the vertical distance from the bottom edge of thecross-section to the centroid of rectangles (1). Similarly, findA2, the area of rectangles (2), and y, the vertical distancefrom the bottom edge of the cross-section to the centroid ofrectangles (2). Then, find Az and y, for rectangle (3).y(3)K(1)(1)td(Сур)(2)(2)

As per the guidelines, I can solve only first three subparts of first question. For rest questions,…

Answered: The internal shear force at a certain…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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a. find the area and vertical distances from the bottom edge of the cross-section to the centoid of rectangles

b. Find Iz, the area moment of inertia about the z centroidal axis for the cross-section.

c. Find QH, the first moment of area about the z centroidal axis for the entire area below point H. This area has width 2c2c and height tt. Also, find QK, the first moment of area about the z centroidal axis for the entire area above point K with width b and height t.

d. Determine the magnitudes of the shear stress at point H and the shear stress at point K.

e. Find Qmax, the maximum first moment of area about the z centroidal axis for any point in the cross section, and τmax, the maximum horizontal shear stress magnitude in the cross section.

The internal shear force at a certain section of a steel beam is
V = 7.2 kN. The beam cross section shown in the figure has
dimensions of b = 136 mm, c = 33 mm, d = 66 mm, and t = 6
mm. Determine:
(a) the shear stress at point H.
(b) the shear stress at point K.
(c) the maximum horizontal shear stress in the cross section.
b
y|
K
d
H
Led
Led

Break the cross section into five rectangles, as shown. It is
seen that the two labeled with a (1) are identical, and the two
labeled with a (2) are identical. Find A, the area of rectangles
(1), and y,, the vertical distance from the bottom edge of the
cross-section to the centroid of rectangles (1). Similarly, find
A2, the area of rectangles (2), and y, the vertical distance
from the bottom edge of the cross-section to the centroid of
rectangles (2). Then, find Az and y, for rectangle (3).
y
(3)
K
(1)
(1)
t
d
(Сур)
(2)
(2)

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