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K3.4 Three-dimensional Force Systems Item 3 To use the conditions of equilibrium to solve for unknown forces in a three-dimen
3 of6 Part B As shown, a system of cables supports a bucket. (Figure 2) The dmensions in the figure are as follows 1 50 ft 15
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345 1.5 お もFind unit vectors A = 5.5i +0j +3.45k B=1.5i+0j +0k C 0i+3.25j +2.65k D=1.5i + 2jt0k DA A -D-(5.5i+0j +3.45k)-(1.5i+2j+0k) DADAD0.71DAi 0.354 DA j +0.61 DA k DCulc-0.4556 DC i +0.3797 DC j+0.8049 DC k Wbie lb At equilibrium i-0.71 DA-0.4556 DC 0 j→-0

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