Question

I'm a little confused, how can I solve this?

http://i.imgur.com/BbAwlvq.png

Thanks. Here is the FBD I made:

http://i.imm.io/1ifxW.jpeg

Thank you

Answer 1

I got 5.5m but it's wrong.

Answer 2

Someone said,


In the x direction

[; F_x = F\cos(\theta) ;]

In the y direction

[; F_y = F\sin(\theta) ;]

For C and B they will have 2 components (one in the x direction and one in the y direction) with D there will be one component (since it is only acting in the x direction)

Therefore

[; F_{bx} + F_{by} + F_{cx} + F_{cy} + F_{dx} = 0 ;]

Remember that the components of vectors need to be added using the Pythagorean theorem.

But not sure...

Answer 3

When does the cosine of the angle made by AC = 0?

Answer 4

AC is 0 N right?

Answer 5

tan^-1 = 245.25/90 = 69.85 degrees then use pyth theorem to find d?