Solving Tension in a Cable Homework

[datphysics]

Homework Statement

Im having trouble understanding how to find the tension 'T' and pretty much answering the question on the .jpg file i have attached

Homework Equations

ƩFx=0, ƩFy=0, τ=r x F

The Attempt at a Solution

For question 17 i have:
TLsinθ - w(l/2cosθ)-w(Lcosθ)= 0 (*because net sum of torques =0*)

And for question 18 i have no attempts at the question haha.

Help would be much appreciated!

 

[Doc Al]

For question 17 i have:
TLsinθ - w(l/2cosθ)-w(Lcosθ)= 0 (*because net sum of torques =0*)

Good. That will give you the tension. What about the other conditions for equilibrium?

 

[datphysics]

Umm i have no idea what are the other conditions of an equilibrium are..

 

[Doc Al]

Umm i have no idea what are the other conditions of an equilibrium are..

You posted them under "Relevant Equations".

 

[datphysics]

Sorry for the delayed reply but i have completed number 18 but have not completed 17 (been doing other topics, anyways back this topic).

The next part should be: (But I am not sure how haha)
3.TLsin60-3/2WLcos60 = 0

 

[Doc Al]

Sorry for the delayed reply but i have completed number 18 but have not completed 17 (been doing other topics, anyways back this topic).

The next part should be: (But I am not sure how haha)
3.TLsin60-3/2WLcos60 = 0

Show your equations for ƩFx = 0 and ƩFy = 0.

Hint: Label the force components exerted by the pivot as Px & Py. You'll solve for those components, of course.