Thanks. This one too.
http://img94.imageshack.us/img94/7417/blahfu.png
Answer : 1.4m/s^2
LOL at the image name "Blahfu"
![Tongue :P](https://studentforums.biz/Smileys/default/tongue.gif)
There are two forces acting here, the force of gravity acting on the block, and the force of friction, which is 6N.
The force pulling the weight down is,
![2*9.81=19.62N](https://studentforums.biz/cgi-bin/mimetex.cgi?2*9.81=19.62N)
Therefore, the net force is,
![19.62-6=13.62N](https://studentforums.biz/cgi-bin/mimetex.cgi?19.62-6=13.62N)
Now, when doing these calculations, there is uniform acceleration, because the acceleration of the 8 KG box is the same as the acceleration of the 2 KG box.
So,
![F=ma](https://studentforums.biz/cgi-bin/mimetex.cgi?F=ma)
![13.62=(8+2)a](https://studentforums.biz/cgi-bin/mimetex.cgi?13.62=(8+2)a)
![\frac{13.62}{10}=1.362](https://studentforums.biz/cgi-bin/mimetex.cgi?\frac{13.62}{10}=1.362)
![\approx1.4](https://studentforums.biz/cgi-bin/mimetex.cgi?\approx1.4)