Statics Questions: Help with Finding Correct Answers

[qpzm77gg]

The first picture is the question picture.
The second picture is my calculation for this questions.
I can't find the correct answer, everybody know why?

Thanks

 

[gneill]

You seem to be applying both maximum forces at the same time. It won't be the case that for a given load the maximum force occurs in both elements simultaneously; one will reach its maximum before other (but you can't tell which yet).

So, start by assuming that the maximum in the jib element is reached first. Set up static equilibrium equations and solve for the tension in the tie. Does it exceed its maximum? If not, find the load and this will be your maximum load. If it does, then clearly the tie maxes out first so redo the calculations beginning with the tie tension set to maximum.

 

[qpzm77gg]

supplementary one of my problems.
Is't necessary the moment method to solve this questions?

Thanks

 

[gneill]

supplementary one of my problems.
Is't necessary the moment method to solve this questions?

Thanks

It should be sufficient to realize that for stasis to hold, the sum of the forces acting at point C should be zero.

 

[rezeew]

for reaching out for help with finding the correct answers to your statics questions. It's great that you are actively working on solving the problems and seeking assistance when needed. Based on the second picture you provided, it seems like you have made a good attempt at solving the problem. However, without seeing the actual question and knowing the specific steps and calculations you took, it is difficult to determine why you are having trouble finding the correct answer. It could be a simple mistake in one of your calculations or a misunderstanding of the problem itself. I suggest double checking your work and if you are still struggling, consider reaching out to your professor or a classmate for further clarification. Remember, asking for help is a sign of strength and determination to understand the material. Keep up the good work!