Introductory mechanics (statics)

Hello guys, first post. Long time lurker however, hehe.

1. The problem statement, all variables and given/known data
I need assistance with a few questions, it is easier to see them in this little collage.

2. Relevant equations
n/a, possibly the equilibrium equations?

3. The attempt at a solution
I have tried for hours, pages upon pages + google searches. I will upload a picture of my attempted FBD’s for the questions/working tomorrow when I have access to ym scanner.

Thank you for your help.

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