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Unread 06-09-2007, 00:07
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Pragmatic Strategy, I try...
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Re: Help on calc 3 problem would be incredibly appreciated...

Well... here's what I got so far:

I pretty much focused on OA... I did normalize the vector equation to get

[2/sqrt(21)] i + [1/sqrt(21)] j + [4/sqrt(21] k *This is after simplification, the magnitude of OA is 5sqrt(21)*

Realizing this will create ratios of force, and that the magnitude of the normal equation is 1, I then put this through the projection formula:

projv u = (u.v/||v||^2)v

Letting u = OA and v = the 1000kg vector... the x and y components logically no longer matter and its projection comes out to be

(4sqrt(21))/21 k

Then finding the magnitude of that projection resulted in:

16/21


And that is how the cookie crumbled for me... does that seem right???

I do like to learn different routes of logic, and vector math in calc 3 has definitely introduced me to that... so I really do appreciate the hints and everything. Helps me out a lot.

_joe

Update: thinking about it... the 16/21 had to be its portion of the load... so the actual load bearing capacity i came up with was ~762... but i still dont know if its right...
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Joeseph P. Smith
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University of Michigan - Informatics (B. Sci. 2012)
General Purpose Programmer - Cooperative Institute for Limnology and Ecosystems Research (CILER) at NOAA-GLERL

Last edited by JoeXIII'007 : 06-09-2007 at 09:18. Reason: putting down thoughts
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