A mass of 3kg, is sitting on a 34° incline and is connected by a massless string over a pulley in the shape of a hollow cylinder (with a mass of 0.45 kg, an inner radius of 0.02m and an outer radius of 0.03m) to another 15 kg mass that is hanging vertically. If the coefficient of friction between the 3kg block and the incline is 0.3, what is the acceleration of the system?