1. The problem statement, all variables and given/known data Hi guys, got a bit of a tough problem that i cant seem to solve. What is the acceleration of two masses and the tension in the string if both surfaces are friction less. http://img376.imageshack.us/img376/5889/physics.jpg [Broken] 2. Relevant equations 3. The attempt at a solution Now i had another example that i tried to follow but, in that one the force of friction is 9N. I tried to make the following eqn m2a = -T-m2gsin40 - ( this is where i got stuck, i dont know what to subtract as there is no force given.) could someone give me an idea where to start? thanks.