Solving 3D Statics Moment & Normal Force Problems

  • Thread starter Thread starter mrmotobiker
  • Start date Start date
  • Tags Tags
    3d Moment Statics
Click For Summary

Discussion Overview

The discussion revolves around solving a problem related to 3D statics, specifically focusing on finding the reaction (normal) forces at points C, B, and A using a vector method. The scope includes technical reasoning and mathematical approaches to statics problems.

Discussion Character

  • Technical explanation, Mathematical reasoning, Homework-related

Main Points Raised

  • One participant inquires about finding the normal forces at points C, B, and A using a vector method, suggesting a specific equation involving cross products.
  • The same participant claims to have arrived at specific values for the normal forces, indicating a comparison between a vector approach and a more traditional method of summing forces and moments.
  • Another participant notes an issue with an attachment related to the problem, indicating a possible technical difficulty in sharing information.
  • A further reply encourages the original poster to ensure their vector method is applied correctly and suggests posting their attempt for review.

Areas of Agreement / Disagreement

The discussion does not present a consensus, as participants have not yet engaged deeply enough to establish agreement or disagreement on the methods or results.

Contextual Notes

There are limitations regarding the clarity of the problem due to the attachment issue, and the original poster's method has not been fully detailed or validated by others.

Who May Find This Useful

Individuals interested in 3D statics problems, particularly those seeking to understand vector methods for calculating reaction forces in engineering contexts.

mrmotobiker
Messages
47
Reaction score
0
hi all, I'm new to this forum and have read through a lot of the topics. i also tried searching the previous problems, but haven't found anything yet.

anyways, here's my question:

how do i find the reaction (normal) forces on points C, B, and A? I'm trying to do this with the vector method which i originally thought is supposed to be
rac X C + rab X B - rad X F.

the answer is supposed to be Nb=Na=.367F and Nc=.265 and which is what i got doing it the long and painful way of summing all forces and finding moments in 2d first.

thanks.
 

Attachments

  • image006.jpg
    image006.jpg
    15.1 KB · Views: 506
Physics news on Phys.org
The attachment doesn't seem to work (or is it just me?).
 
radou said:
The attachment doesn't seem to work (or is it just me?).

It hasn't been approved, yet... *waiting for a mentor* :smile:
 
You can do it vectorially, just make sure, you're doing it well. Maybe you can post your attempt.
 

Similar threads

Engineering Instantaneous Center of Rotation (Polplan in german) and STATICS
  • · Replies 1 ·
Replies
1
Views
2K
Engineering Statics of Rigid Bodies - Why is the normal force not considered?
  • · Replies 4 ·
Replies
4
Views
2K
Loader Boom maximum bending moment
  • · Replies 2 ·
Replies
2
Views
2K
Engineering Solving a Moment Vector Direction Problem: An Example from Statics Textbook
  • · Replies 2 ·
Replies
2
Views
2K
Engineering Solving for the Reaction Force by taking Moment about a Point
  • · Replies 1 ·
Replies
1
Views
3K
Mastering 3D Statics: How to Solve Moments and Forces for Bearings A and B
  • · Replies 1 ·
Replies
1
Views
3K
Engineering Statics - Determine the Reactions on this bent bar levering between two surfaces
  • · Replies 27 ·
Replies
27
Views
4K
Engineering Solve X-Forces for Frame Statics Problem
  • · Replies 5 ·
Replies
5
Views
2K
Engineering Statics project involving shear & moment diagram of a control arm
  • · Replies 3 ·
Replies
3
Views
2K
Engineering Distance is a problem -- find shear force and bending moment diagram
  • · Replies 2 ·
Replies
2
Views
3K