Two Boxes on an incline, tied together by a rope, calculuate tension.

[trafficsigns]

1. Homework Statement [/b]
Box A1 (2.0 kg) and Box A2 (5.0 kg) are slide down a ramp. They are connected by a rope (mass less) and the coefficient of kinetic friction between A1 and ramp is 0.200 and A2 is 0.100.
1) Calculate tension in the rope
2) Magnitude of the acceleration of A1/

 

[Quinzio]

Any attempt ?
The slope of the ramp is given ?