Solving Tension on Wires Homework

[Messiah19]

Homework Statement

A 75N bird feeder hangs from a vertical wire that is connected to two other upper wires that are attached to a horizontal support, as shown in the figure

On a copy of the diagram, draw arrows to indicate the forces present in the wires

By considering forces A, calculate the tension in the wire AB, which rests at an angle of 60 degrees to the horizontal.

Homework Equations

No equations given

The Attempt at a Solution

i did this

75= Ab Sin 60

The answer is 84.6 N

but i don't think the answer is good.

 

[Doc Al]

What about the tension in the other wire? You can't ignore it.

 

[chrysanthemes]

84.6N is correct? I too am not sure how to do it even though the working must be something easy T.T

 

[Doc Al]

84.6N is correct? I too am not sure how to do it even though the working must be something easy.

No, it's not correct. To find the correct answer, apply the conditions for equilibrium.