1. The problem statement, all variables and given/known data What is the acceleration of the masses as shown in the second attached image. m1 = 0.9kg, m2 = 1.6kg, and m3 = 2.4kg. (Assume the table is frictionless) 2. Relevant equations [tex]\sum[/tex]F=ma F_mg+FN = ma 3. The attempt at a solution I figured everything up to the point a=F/(m1+m2+m3) but without the force given, how do you figure it out?