A horizontal shelf AD of length L = 1215 mm, width b= 305 mm, and thickness t= 22 mm is supported by brackets at B and C (see part a of Figure 1). The brackets are adjustable and may be placed in any desired positions between the ends of the shelf. A uniform load of intensity q, which includes the weight of the shelf itself, acts on the shelf (see part b of Figure 1). L. (a) Determine the maximum permissible value of the load q if the allowable bending stress in the shelf is 8.5 MPa and the position of the supports is adjusted for maximum load carrying capacity. D В C %3! Oallow (b) Hint: Find the spacing x between the two supports, such that the maximum and minimum bending moments are equal in absolute value. Figure 1. © 2013 Cengage Learning Engineering. All Rights Reserved D)

A horizontal shelf AD of length L = 1215 mm, width b= 305 mm, and thickness t= 22 mm is supported by brackets at B and C (see part a of Figure 1). The brackets are adjustable and may be placed in any desired positions between the ends of the shelf. A uniform load of intensity q, which includes the weight of the shelf itself, acts on the shelf (see part b of Figure 1). L. (a) Determine the maximum permissible value of the load q if the allowable bending stress in the shelf is 8.5 MPa and the position of the supports is adjusted for maximum load carrying capacity. D В C %3! Oallow (b) Hint: Find the spacing x between the two supports, such that the maximum and minimum bending moments are equal in absolute value. Figure 1. © 2013 Cengage Learning Engineering. All Rights Reserved D)

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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Question

Answer with proper explanations.

A horizontal shelf AD of length L = 1215 mm, width
b= 305 mm, and thickness t= 22 mm is supported by
brackets at B and C (see part a of Figure 1). The
brackets are adjustable and may be placed in any
desired positions between the ends of the shelf. A
uniform load of intensity q, which includes the
weight of the shelf itself, acts on the shelf (see part b
of Figure 1).
L.
(a)
Determine the maximum permissible value of the
load q if the allowable bending stress in the shelf is
8.5 MPa and the position of the supports is
adjusted for maximum load carrying capacity.
D
В
C
%3!
Oallow
(b)
Hint: Find the spacing x between the two supports,
such that the maximum and minimum bending
moments are equal in absolute value.
Figure 1. © 2013 Cengage Learning
Engineering. All Rights Reserved
D)

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