20 k - 15 k 8 ft 20 k 6 ft 6 ft 6 ft 6 ft

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Determine the force in each members of the truss by method of joints 

20 k
- 15 k
8 ft
20 k
6 ft
6 ft
6 ft
6 ft
Transcribed Image Text:20 k - 15 k 8 ft 20 k 6 ft 6 ft 6 ft 6 ft
Expert Solution
Step 1

Consider the free body diagram of the truss shown below. 

Civil Engineering homework question answer, step 1, image 1

Consider the summation of forces in the horizontal direction.

Civil Engineering homework question answer, step 1, image 2

Consider the equilibrium moment about point A.

Civil Engineering homework question answer, step 1, image 3

Consider the summation of forces in the horizontal direction.

Civil Engineering homework question answer, step 1, image 4

The cosine component is,

Civil Engineering homework question answer, step 1, image 5

The sine component is,

Civil Engineering homework question answer, step 1, image 6

 

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