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KEØM
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Homework Statement
A piece of machinery of weight W is temporarily supported by cables AB, AC, and ADE. Cable ADE is attached to the ring at A, passes over the pulley at D and back through the ring, and is attached to the support at E. Knowing that the tension in cable AB is 300 N, determine (a) the tension in AC, (b) the tension in ADE, (c) the weight W. (Hint: The tension is the same portions of cable ADE.)
Here is a link to the picture of the drawing just with a different problem (On page 63 Fig. P2.123):
http://books.google.com/books?id=o4...5j4Cg&sa=X&oi=book_result&ct=result&resnum=7"\
Homework Equations
[tex]\Sigma[/tex]F = 0
F = FU (u is a unit vector pointing in the direction of F)
U = AB/AB (AB is a distance vector for example describing the length and oreintation of the cables in this problem)
The Attempt at a Solution
I first am finding U for cables AC, AE, AD, and AB and then I multiply that vector by the unknown magnitude of the tension. I then sum all the x, y, and z components of each cable tension and the weight of the machine giving me 3 equations with three unknowns. Solving these equations does not give me the correct answers to this problem. I think I am solving it in the correct way I just can't figure out what I am doing wrong. Is my way of solving this problem correct?
Thanks in advance,
KEØM
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