pig wrote:and jackstatic, how did you decide to divide W/R? Was there some kind of logic or formula to what you did?
Its probably absolutely wrong to do it this way so I don't recommend it, but I treated it as a shear wall/drag strut where I had the force and divided it by the rigidity... at least thats what I assumed the R meant.... This ONLY worked out because the other variables were 1s, and 1x1/6 is 0.167, so I effectively skipped some steps, whats dangerous about that tho is if the other variables were NOT 1 but say... .5x.5/6 you would get 0.0416 and the answer would be completely different.
Mathematically, dividing 1000/6 = 166.667, where as multiplying 1000x0.167= 167, again this only worked because the other variables were 1. I.E. I got lucky....
As for the kaplan answer, I get that we uses V=CsW, and that Cs = SdsI/R is 0.167, what i dont get is why they then compare it to Cs=Sd1I/TR which is 0.229. Is this a simple case of whichever number is less becomes the number we multiply by 1,000,000# (1,000k)?
What scares me about this question is that it's showing me I may not be ready for this test Sunday... ugh... I've been studying my balls off for the last month+ already failed this once, and was THINKING I was more prepared than last time.... I've taken off tmrw, friday, and saturday to just run practice exams, as I am wrapping up the Thaddeus re-watch tonight (got 2 hours left)... here's hopin!
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