(Solved): 3) Three wires(DA, DB, DC) are connected at point D, which is located 18 inches below point E. Know ...

3) Three wires(DA, DB, DC) are connected at point $$\mathrm{D}$$, which is located 18 inches below point E. Knowing that the tension in cable $$\mathrm{DA}$$ is $$1201b5$$, find: a) the moment about the coordinate axes of the force exerted by the wire DA, b) moment about the line EC (not drawn in) of the tension in DA, c) tension in the other cables as well as the weight, W, for equitibrium.