Help. Shear force and bending moment problem makes no sense

In summary, the conversation is about a problem involving splitting up a mechanism into separate free body diagrams and ensuring that all forces and moments are in equilibrium. The poster is advised to follow the directions and add necessary forces and moments to each free body diagram to achieve equilibrium. The length of the pieces after cutting is not relevant to the solution.
  • #1
Blugga
22
0

Homework Statement



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Homework Equations



ƩFx=0
ƩFy=0
ƩMo=0

The Attempt at a Solution



I have no clue. By cutting the pieces, it changes the length. By cutting the cable at c and removing the 2 supports, wouldn't it make all the forces and moments = 0?
 
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  • #2
Regardless of what the subject line says, this is not a problem about shear force and bending moments. It is a problem about splitting up the mechanism in the diagram into a series of separate free body diagrams.

I urge the poster to follow the directions and then see if all forces and moments = 0.

It doesn't matter if the cuts change the length (which length?) The final result should be that all of the separate free bodies, after adding the necessary forces and moments, are in equilibrium.
 

What is shear force and bending moment?

Shear force and bending moment are two important concepts in structural engineering that describe the internal forces and stresses experienced by a structure when subjected to external loads. Shear force is the force that tends to shear or cut a material, while bending moment is the measure of the bending or twisting effect on a structure.

Why is understanding shear force and bending moment important?

Understanding shear force and bending moment is crucial for designing safe and efficient structures. By analyzing these forces, engineers can determine the strength and stability of a structure and make necessary design changes to ensure its safety.

What are the units of shear force and bending moment?

Shear force is typically measured in units of force, such as pounds or newtons, while bending moment is measured in units of force multiplied by distance, such as pound-feet or newton-meters.

What are some common problems encountered in shear force and bending moment analysis?

Some common problems that may arise during shear force and bending moment analysis include incorrect assumptions about the structure's geometry, neglecting important factors such as material properties, and inaccuracies in the applied loads. It is important to carefully consider all relevant factors and double check calculations to avoid these errors.

How can I improve my understanding of shear force and bending moment?

One way to improve your understanding of shear force and bending moment is to practice solving problems and analyzing real-world structures. Additionally, seeking guidance from experienced engineers and studying relevant textbooks and resources can also help improve your understanding of these concepts.

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