Concept explainers
To find: the weight if the vertical deflection is 0.8 feet?.
Answer to Problem 27E
The weight could be 100 feet or dead center.
According to the graph, it could also be 161.8 feet.
Explanation of Solution
Given information: Construction: A steel beam is supported by two pilings 200 feet apart. If a weight is placed x feet from the piling on the left, a vertical deflection dequals
Calculation:
Given
Let d = 0.8
Replace d
Bring terms to one side, multiply both sides by − 10,000,000
Divide both sides by 8
Graphing the function you can see there are 2 places.
The weight could be 100 feet or dead center.
According to the graph, it could also be 161.8 feet.
Chapter 4 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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