How to Calculate F1 and F2 for a Balanced Beam?

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Homework Help Overview

The original poster presents a problem involving a beam that is balanced with forces acting at specific points. The beam is 167.5mm long and supported at 24.5mm, with a force of 6600kgf applied at one end. The task is to calculate two unknown forces, F1 and F2, located at 128.5mm and 167.5mm along the beam, respectively.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the static nature of the problem, noting that the net force and net torque must be zero. There are suggestions to start with a diagram and to show work before receiving further assistance. Some participants express uncertainty about the number of unknowns and the lack of clarity in the problem statement regarding the directions of the forces.

Discussion Status

The discussion is ongoing, with participants exploring the implications of the static problem and questioning the assumptions made in the original post. There is no explicit consensus on how to proceed, and some participants suggest that the original poster needs to clarify the problem further.

Contextual Notes

There is a noted lack of information regarding how the forces F1 and F2 are acting, as well as the direction of the applied force of 6600kgf. The problem's setup appears to be incomplete, leading to confusion among participants.

Buns_of_Steel
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Member advised to use the homework template for posts in the homework sections of PF.
Ok here goes. It's been a long time since I've done anything like this and i just can't remember what to do.

I'e got a beam 167.5mm long. It is supported at 24.5mm along the beam.

6600kgf acts at one end of the beam.

F1 acts at 128.5mm along the beam. F2 acts at 167.5mm along the beam.

F1 and F2 are different and the beam is balanced.

How do i calculate F1 and F2?

Cheers
 
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You posted in the homework section so should use the template.

Perhaps start with a diagram?

It's a static problem so the net force is zero and the net torque about any point is zero.
 
It's a static problem so the net force is zero and the net torque about any point is zero.[/QUOTE]

I agree with static problem thing.
But how can we get F1 and F2.
 
Universeer said:
I agree with static problem thing.
But how can we get F1 and F2.
You have to show some work before we are allowed to help you.
 
Universeer said:
It's a static problem so the net force is zero and the net torque about any point is zero.

I agree with static problem thing.
But how can we get F1 and F2.[/QUOTE]
Let's see your force- and moment balance equations.
 
As there are two unknowns (F1 and F2) you will need two simultaneous equations. See my post #2 for a hint.
 
Looks like 3 unknowns. The single support reaction is an unknown. There is no specific solution. If the problem is stated correctly.
 
Last edited:
On reading the OP again I think I agree.
 
PhanthomJay said:
Looks like 3 unknowns. The single support reaction is an unknown. There is no specific solution. If the problem is stated correctly.
It's worse than that. The problem doesn't state how the forces F1 and F2 are acting: Are they both acting upwards? One up one down? Something else? Which end of the beam is the 6600 kgf acting?

I'm very tempted to simply delete the thread and ask the OP to start over with a full disclosure of the original question in its original form (and to use the template, of course).
 
  • #10
I wouldn't delete it. I think better to close it until the OP responds to your PM.
 

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