Residential Construction Academy: House Wiring (MindTap Course List)
5th Edition
ISBN: 9781337402415
Author: Gregory W Fletcher
Publisher: Cengage Learning
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Chapter 3, Problem 4RQ
Name the three styles of screwdrivers used most often in residential electrical work. (Objective 3-1)
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Consider the structure shown in (Figure 1). Suppose that
F = 2500 N.
Figure
0.2 m
1500 N
0.2 m
30%
0.2 m
B
-0.2 m-0.2 m-
F
Part A
Determine the resultant couple moment.
Express your answer to three significant figures and include the appropriate units. Enter positive value if the moment is
counterclockwise and negative value if the moment is clockwise.
ΜΑ
?
1 of 1
MR = 2.85
kN⚫m
√30°
1500 N
AUG
16
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A
W
20
Aa
Example
The 30-N force P is applied perpendicular to the
portion BC of the bent bar. Determine the moment
of P about point B and about point A.
Ans: Mb= 48 N.m
Ma= 81.941 N.m
P = 30 N
1.6 m
45°
B
1.6 m
Q2. Write the flexibility matrix corresponding to coordinates 1 and 2 for the structures shown.
13
ans:
l
4 11
3 [16 51
6EI 126EI 5 2
(a)
A
-1-
2
(b)
A
B
Constant EI
2
Chapter 3 Solutions
Residential Construction Academy: House Wiring (MindTap Course List)
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