Math Problem Statement
Solution
The image shows a civil engineering problem related to beam deflection and support reactions. Here's a breakdown of the given problem:
Problem Summary:
- A beam of uniform cross-section with a flexural rigidity (EI) = 2.0 × 10⁴ kNm² is placed on three supports.
- The beam is 9 meters long, divided into three segments: 3.5 m at both ends and 2 m in the center, with a uniform load of 35 kN/m.
- Support B is at the middle of the beam, and supports A and C are at each end.
The questions asked are:
- Calculate the reaction at support A.
- Calculate the reaction at support B.
- Find the deflection at A.
Multiple Choice Options:
For question 28:
- A. 102.50 kN
- B. 49.02 kN
- C. 97.28 kN
- D. 37.50 kN
For question 29:
- A. 105.50 kN
- B. 45.02 kN
- C. 85.42 kN
- D. 52.00 kN
For question 30 (Deflection at A):
- A. 4.62 mm
- B. 0.45 mm
- C. 5.82 mm
- D. 3.61 mm
Approach to Solving:
1. Reaction at Supports:
The beam is statically indeterminate because there are three supports, which requires the use of the three-moment equation or other methods of indeterminate analysis (like superposition) to find the reactions.
2. Deflection Calculation:
To calculate the deflection at A, we need to:
- Use the formula for the deflection of beams under uniform loads.
- Incorporate the given flexural rigidity .
Would you like to proceed with detailed calculations for the reactions and deflection, or do you have specific questions about one part of the problem?
Here are 5 relevant follow-up questions:
- Would you like me to solve for the reaction at support A?
- Do you want to see how the three-moment equation is applied for the reaction at B?
- Should I calculate the deflection at point A step by step?
- Do you need an explanation on how to use the flexural rigidity in the deflection formula?
- Are you familiar with the superposition method for statically indeterminate beams?
Tip: When solving indeterminate beam problems, the three-moment equation is a powerful tool to analyze the distribution of moments across multiple spans.
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Math Problem Analysis
Mathematical Concepts
Structural Analysis
Beam Deflection
Indeterminate Structures
Formulas
Three-moment equation for statically indeterminate beams
Deflection formula for beams under uniform loads: δ = (5wL⁴) / (384EI)
Theorems
Three-moment theorem
Superposition principle
Suitable Grade Level
Undergraduate Civil Engineering
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