Ah right okay. So basically if they ask for max or anything always use σ=My/I , and then if it is compression, add the negative sign to the final answer. Cheers mate
Homework Statement
In calculating stresses, how do we determine when we have a negative in front of the question and when we do not have it. I am really confused, meaning I have not understood the concept, but the examples I am looking at some have got σ= My/I whilst others have σ= -My/I...
Hey guys, I was just doing some mechanics of solids. I haven't done this section at uni yet, had holidays so was just trying to go ahead a bit. But the problem is I am completely lost on shear centre. If you could help me on a question, i'd be very grateful.
Homework Statement The question is...