A two-side 'A' shaped ladder and then tension in the wire that holds it together

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Homework Help Overview

The problem involves a two-sided ladder shaped like the letter 'A', with uniform rods and a tension wire connecting them. Participants are tasked with determining the tension in the wire while considering the forces and torques acting on the system.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the equilibrium of the system and the application of forces and torques. There is a suggestion to visualize the problem with a diagram and to consider the forces acting on one side of the ladder. Questions arise regarding whether to treat the ladder as a single unit or to consider the individual components separately.

Discussion Status

The discussion is ongoing, with participants offering guidance on how to approach the problem. There is a divergence in thought regarding whether to double the tension when considering the two sides of the ladder, with some participants questioning this assumption.

Contextual Notes

The problem setup includes specific measurements and conditions, such as the weights of the rods and the frictionless nature of the hinge and floor, which may influence the analysis but are not fully explored in the discussion.

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Homework Statement



A ladder is made in the shape of the letter A. Treat the two sides of the ladder as identical uniform rods, each weighing 455 N, with a length of 3.60 m. A frictionless hinge connects the two ends at the top, and a horizontal wire, 1.20 m long, connects them at a distance 1.40 m from the hinge, as measured along the sides. The ladder rests on a frictionless floor. What is the tension in the wire?

Homework Equations



\sumFx = 0
\sumFy = 0


The Attempt at a Solution



I honestly don't know where exactly to start on this solution.

I know that the system is in equilibrium, so all the forces should sum to 0. Couldn't I just pretend it was just one ladder leaning against a wall, and then double the tension to get the tension of wire in this double ladder?

Where else can I start on this problem?
 
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hello,

the first thing, if you haven't done it already, would be to draw a figure. once you have that, just consider the forces, and torques, on one of the beams.

hope this helps
 
eczeno said:
hello,

the first thing, if you haven't done it already, would be to draw a figure. once you have that, just consider the forces, and torques, on one of the beams.

hope this helps

So should I consider just one ladder and double the tension in order to get the tension in the 'A' ladder
 
consider one ladder, but don't double the tension, it will pull in equal but opposite directions on each ladder.

cheers
 

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