Solve Equilibrium Problem - Find Tension in T3 & T4

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Homework Help Overview

The discussion revolves around an equilibrium problem involving tensions T3 and T4, with participants attempting to analyze a diagram that illustrates the forces at play. The original poster expresses difficulty in progressing beyond the calculations for tensions T1 and T2.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss initial attempts to calculate T1 and T2 using trigonometric relationships and substitution. Questions arise regarding the next steps to find T3 and T4, with some uncertainty about the angles and the approach to take.

Discussion Status

Some guidance has been offered, including the suggestion to draw a Free Body Diagram, which may help clarify the relationships between the tensions. There is an ongoing exploration of how to treat the sections of the problem and whether to focus on T1, T2, or other tensions.

Contextual Notes

The original poster has provided angles for T1 and T2 but expresses confusion about the implications of these angles on the calculations for T3 and T4. There is also mention of a diagram that has not yet been shared, which may contain critical information for the problem.

physicspat
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Hey guys,
I am trying to solve this equilibrium problem without any success...
I attached a jpeg of the diagram because a picture is worth a thousand words.
I am trying to find the tension in T3 & T4

Thannks
 
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physicspat said:
Hey guys,
I am trying to solve this equilibrium problem without any success...
I attached a jpeg of the diagram because a picture is worth a thousand words.
I am trying to find the tension in T3 & T4

Thannks

Forgot to attach it
 

Attachments

  • Physicsproblem.jpg
    Physicsproblem.jpg
    6.5 KB · Views: 408
What have you tried?

Where are you stuck?
 
I started by finding T1 & T2.
Using:
T1*Sin(Angle1) + T2*Sin(Angle2) = 150
T1*cos(Angle1) + T2*Sin(Angle2) = 0

Then I use substitution

T2 = ( - T1*Cos(Angle1) / Cos(Angle2))

Angle 1 = 110 Degrees
Angle 2 = 60 degrees

I got a tension of 98 N in T1 and 67 N in T2.

This is where I block and do not know how to figure out T3 & T4.
I was thinking that I would treat each section separately and so when I am trying to solve for T4 I would use T1/T4/T5 vectors.
In this case the W would be T1 but it is at 290 degree angle so this is confusing me...

If I am going at this the wrong way please redirect me :)
 
Draw a Free Body Diagram for the triangle.

Unless you are to solve for T1 or T2 or T5, you can ignore them!
 

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