Homework question Static Equilibrium, resultant velocity

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Homework Help Overview

The discussion revolves around a homework question related to static equilibrium and resultant velocity. The original poster expresses difficulty in understanding the concepts after missing a class and seeks assistance with the assignment due.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants inquire about the original poster's understanding of key terms such as 'the load in a member' and 'components'. There are discussions about the forces that need to be considered and the general equations of statics that may apply. The original poster attempts to formulate equations based on the loads and slopes in the members but expresses confusion about substituting values when roots are involved.

Discussion Status

The discussion is ongoing, with participants providing guidance on the importance of understanding the problem's terminology and encouraging the original poster to clarify their approach. There is a recognition of the original poster's attempts to set up equations, although they are still seeking clarity on how to proceed with their calculations.

Contextual Notes

The original poster has missed a class, which may contribute to their current challenges in grasping the material. There is also a note that the original poster has posted two copies of the same problem, indicating a potential misunderstanding of forum etiquette.

Robert turbin
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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

 

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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?
 
haruspex said:
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
 
Robert turbin said:
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.

Robert turbin said:
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.
 
Just for clarification, the OP has posted two copies of the same problem. :oops:
 

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