Math Problem Statement
Solution
The image appears to depict a simply supported beam subject to a uniformly distributed load along its entire length and a concentrated load placed at a point. The beam has a total length of 22 feet, distributed as 8 feet, 8 feet (where the concentrated load is placed), and 6 feet.
To solve this, let's calculate the reactions at the supports due to the distributed and concentrated loads.
Calculations:
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Total Load due to Distributed Load: The total distributed load is calculated by multiplying the load per foot by the total length of the beam.
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Resultant of Distributed Load Position: The resultant of the distributed load acts at the centroid of the distribution, which, since it's uniformly distributed, is at the midpoint of the beam.
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Calculating Reactions at Supports: The beam is supported at the ends, so it's statically determinate. Using the equilibrium conditions and :
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Sum of Vertical Forces:
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Sum of Moments about Point A (counterclockwise positive): Moments due to the distributed load and the point load need to be considered. Solving for : Then, is:
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Summary:
The reaction at support A, , and at support B, , are both 2950 lb. Each support carries half the total load since the concentrated load is symmetrically placed relative to the geometry of the beam. If you have any questions or need further clarification, please let me know!
Would you like to:
- Calculate the shear force diagram for this beam?
- Determine the bending moment diagram?
- Understand the effect of changing the position of the point load?
- Explore the impact of altering the distributed load intensity?
- Calculate the maximum stress in the beam due to bending?
Tip: Always verify the units used in calculations to ensure they are consistent throughout the problem.
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Math Problem Analysis
Mathematical Concepts
Statics
Beam Reactions
Distributed Loads
Concentrated Loads
Formulas
W = w × L (Total load from distributed load)
Moment = Force × Distance
ΣF_y = 0 (Equilibrium of vertical forces)
ΣM = 0 (Equilibrium of moments)
Theorems
Equilibrium of Forces and Moments in Static Systems
Suitable Grade Level
Grades 11-12 and Undergraduate Engineering
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