Equilibrium of a Non-concurrent force system

Click For Summary

Discussion Overview

The discussion revolves around the equilibrium of a non-concurrent force system, focusing on the challenges faced in solving a problem related to the forces acting on a structure. Participants explore various approaches to analyze the system, including moments and equilibrium considerations, while expressing uncertainty about the sufficiency of given values.

Discussion Character

  • Homework-related
  • Debate/contested
  • Exploratory

Main Points Raised

  • One participant expresses difficulty in starting the problem due to perceived insufficient values for forces C, D, and F.
  • Multiple participants request to see the work done so far to identify where the original poster is getting stuck.
  • There is a suggestion to consider the equilibrium of the horizontal rod as a starting point for analysis.
  • Another participant proposes simplifying the problem by visualizing the structure as a triangle, questioning the necessity of detailed force analysis.
  • The original poster reiterates their inability to proceed beyond calculating the equilibrium of points A, B, and C, seeking confirmation on their approach.
  • Questions are raised about the function of pivot supports A and B in preventing sliding or tilting of the structure.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the sufficiency of the given values or the best approach to solve the problem. Multiple competing views on how to analyze the system remain present.

Contextual Notes

There are limitations regarding the clarity of the problem setup, as participants express uncertainty about the adequacy of provided values and the completeness of the original poster's solution attempts.

hokage12368
Messages
4
Reaction score
0
Homework Statement
The frame is supported in pivots at A and B. Compute the horizontal reaction at A and the horizontal and vertical components of the reaction at B. Neglect the weight of the beams
Relevant Equations
How to compute it? Do I need to get the value of individual forces before I get the value of A and B?
IMG_20220208_081804.jpg
I tried solving it but I don't know how to start because I think that the given values are insufficient. I first tried to compute for individual forces of C, D, and F but I can't their values.
 

Attachments

  • 2.png
    2.png
    7.9 KB · Views: 185
Physics news on Phys.org
You need to show us what you tried so we can see where you're getting stuck.
 
vela said:
You need to show us what you tried so we can see where you're getting stuck.
IMG_20220208_084305.jpg

I try the moment of A and B but I don't know how to proceed after this or does my solution wrong?
 
Try considering the equilibrium of the horizontal rod first.
 
vela said:
Try considering the equilibrium of the horizontal rod first.
It is the same, after that I don't know how to proceed. May I know if the given values is sufficient to solve the problem? Maybe that's the problem why I can't solve it
 
Posting that you can't solve a problem isn't helpful. We can't see your paper or read your mind. Please show us your work.
 
vela said:
Posting that you can't solve a problem isn't helpful. We can't see your paper or read your mind. Please show us your work.
IMG_20220208_092431.jpg

Sorry, I as said before other than getting the equilibrium of A, B and C I don't know how to proceed anymore that's why other than what I posted here which is an incomplete solution, I don't have a complete solution. That's why I am asking for help on how to proceed or am I doing it right because I can't proceed any further.
 
Why all this fascination with detail, following forces through all the members ?
The particular structure shown weighs nothing and is perfectly rigid.
So step outside the box and replace the entire structure by one triangle, ABC.
Allow the problem to collapse, so you can see the solution in your head.
Or am I missing something ?
 
  • Like
Likes   Reactions: vela and Lnewqban
hokage12368 said:
View attachment 296760
Sorry, I as said before other than getting the equilibrium of A, B and C I don't know how to proceed anymore that's why other than what I posted here which is an incomplete solution, I don't have a complete solution. That's why I am asking for help on how to proceed or am I doing it right because I can't proceed any further.
Welcome!
Did you get any progress?
Can you visualize the function of each pivot support?
The frame and the load can rotate around the vertical axis A-B.
How are the pivots A and B stopping it from sliding down or tilting over?
 

Similar threads

Engineering Equilibrium equations of elastic body
  • · Replies 31 ·
2
Replies
31
Views
4K
Engineering Loads on a shaft with V-Belts
  • · Replies 2 ·
Replies
2
Views
3K
Engineering Statics, Finding Reaction forces for A and H
  • · Replies 6 ·
Replies
6
Views
2K
Engineering Question about Truss Analysis (Statics)
  • · Replies 1 ·
Replies
1
Views
2K
Engineering Solve Value of R: Moment & Equilibrium
  • · Replies 5 ·
Replies
5
Views
2K
Slider Crank Force Analysis: Understanding the Equilibrium Forces and Results
  • · Replies 6 ·
Replies
6
Views
5K
Engineering Statics - Determine the Reactions on this bent bar levering between two surfaces
  • · Replies 27 ·
Replies
27
Views
3K
Engineering Struggling with a Structural Analysis Problem?
  • · Replies 1 ·
Replies
1
Views
2K
Engineering Two approaches in statics not adding up
  • · Replies 5 ·
Replies
5
Views
2K
Engineering Resultant Force and Direction using Parallelogram Law
  • · Replies 6 ·
Replies
6
Views
4K