Homework question Static Equilibrium, resultant velocity

[Robert turbin]

Homework Statement

See the attached sheet, I had missed todays class due to dentist and I found out we had an assignment due today by end of day, I am having trouble learning this on my own, I am trying right now. Could anyone help me with the solutions?

Homework Equations

Question one is looking at static equilibrium[/B]

Second were after resultant velocity

The Attempt at a Solution

 

[haruspex]

Hello Robert and welcome to PF.
It's better to post separate problems in separate threads. For now I'll just respond to the first one.

You are supposed to post some attempt, or at the very least some thoughts on the matter. You may have missed one class, but if given a problem like this I doubt you are completely new to statics.
What do you understand by the term 'the load in a member' (in this context)? Do you understand what is meant by components?
What forces do you need to consider? What general statics equation(s) are likely to be useful?

 

[Robert turbin]

Hello Robert and welcome to PF.
It's better to post separate problems in separate threads. For now I'll just respond to the first one.

You are supposed to post some attempt, or at the very least some thoughts on the matter. You may have missed one class, but if given a problem like this I doubt you are completely new to statics.
What do you understand by the term 'the load in a member' (in this context)? Do you understand what is meant by components?
What forces do you need to consider? What general statics equation(s) are likely to be useful?

Hello, thanks for the reply.

For question 1 I am working on the loads based on slopes in both members and then creating equations for sum of forces in the x and sum of forces in the y direction

I have for x direction -12/13ac+5/root89bc=0 and then for the y i have 5/13ac + 8/root89bc=306kg

after that I am lost as i don't know how to sub in the equations when i have a root as part of it, generally it would just be two fractions

 

[haruspex]

I have for x direction -12/13ac+5/root89bc=0 and then for the y i have 5/13ac + 8/root89bc=306kg

You mean AB, not AC. 306kg is a mass; the equation requires a force.

i don't know how to sub in the equations when i have a root as part of it,

Makes no difference, it's just a number. Solve the simultaneous equations in the usual way.

 

[SteamKing]

Just for clarification, the OP has posted two copies of the same problem.