Statics Shear Force and Bending Moment Diagrams Problem

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SUMMARY

The discussion focuses on the calculation of reactions at supports C and E for constructing shear force and bending moment diagrams in statics. The user identified that the reaction at E is 2.43 kN, while the reaction at C is zero, which leads to a non-equilibrium condition for the beam. It is crucial to calculate all reactions correctly to ensure the beam is in equilibrium before proceeding with the diagrams.

PREREQUISITES
  • Understanding of static equilibrium principles
  • Knowledge of shear force and bending moment diagrams
  • Familiarity with reaction forces and their calculations
  • Basic proficiency in mechanics of materials
NEXT STEPS
  • Study the calculation of reaction forces in static systems
  • Learn how to construct shear force and bending moment diagrams
  • Explore the concept of equilibrium in beams and structures
  • Review examples of statics problems involving multiple supports
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Students and professionals in engineering, particularly those studying statics, structural analysis, or mechanics of materials, will benefit from this discussion.

jordan35
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Figured it out.
 

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For one thing, you haven't calculated the reactions at C and E. Until you do, you won't be able to construct the shear and moment diagrams.

If I am interpreting what you posted correctly, you have all of your reaction at E and none at C. Why?
 
Cx= 0 b/c there are no other forces in the x direction. Ey = 2.43 from sum of moments, and Cy = 0 after plugging into sum of the forces in the y direction. I thought this was strange to have no reactions at C, but don't know what I could have messed up with that part.
 
Sorry, but if you take the reaction at E = 2.43 kN and a zero reaction at C, the beam is NOT in equilibrium because there is a net moment around C.
 

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