Solve Equilibrium Problem - Find Tension in T3 & T4

[physicspat]

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

 

[physicspat]

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

 

[SammyS]

What have you tried?

Where are you stuck?

 

[physicspat]

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 :)

 

[SammyS]

Draw a Free Body Diagram for the triangle.

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