1. The problem statement, all variables and given/known data Figure 5-53 shows Atwood's machine, in which two containers are connected by a cord (of negligible mass) passing over a frictionless pulley (also of negligible mass). At time t = 0, container 1 has mass 1.30kg and container 2 has mass 2.80kg, but container 1 is losing mass at the constant rate of 0.200kg/s. At what rate is the acceleration magnitude of the containers changing at (a) t = 0 and (b) t = 3.00s? (c) When does the acceleration reach its maximum value? 2. Relevant equations I know this has something to do with F=ma but I'm really lost on this one. 3. The attempt at a solution Don't know where to start, really.