Can some one help me to fix Balance Physics ?

(First to say, sorry for my English)

Hello I try to create Balance of wood, like this image

dropbox.com/s/nqvi27xbb8z3ril/Untitled-1.png

The Balance works for me but if I put many objects to the long wood, that wood will fall like it heavy.

My question is " How I can set the long wood not fall when it heavy" , just only left and right balance working?

Here is CAPX > dropbox.com/scl/fi/j3ih3g0dmjgc0sfu2zmrq/demo.capx

Can some one help me?

create a new sprite and set it's physics attribute to immovable = yes.

create a revolute joint between the new sprite and the wood sprite.

LittleStain Thank you so much, it works now :)