2. Three blocks with masses m1= 2.0 kg, m2 = 4.0 kg and m3 = 3.0 kg are placed side by side on a table. The friction between the blocks and the table is negligible. A constant force with magnitude F = 18 N is
applied to the left-most block. (a) Find the acceleration of the system of three blocks. (b) Find the contact
force between the left-most block and the middle block. (c) Find the contact force between the middle block
and the right-most block. (6 points)
ml
m2
m3