Tension in Rope using Torque? Did I do this correctly?

[kepherax]

Homework Statement

A wooden beam is suspended as shown below. The beam has a mass of 25 kg and has a length as shown. A sign is of mass 10 kg is to suspended from the beam at a distance of 2/3 from the edge of the beam. What is the tension in the rope?

Relevant Equations

Torque = |F||d|sin angle or r x F

I think I understand but just want to check if I did this correctly, or if there is more to it...

 

[BvU]

Where's the 'edge' of the beam ?

 

[kepherax]

Where's the 'edge' of the beam ?

I set the pivot point to be where the beam meets the wall, the block on the left is the wall.

 

[kuruman]

Your answer is fine.