Problem 2 A force F = m3 = 25N pushes three boxes with masses m₁ = 8kg as shown in Figure 3.29 5kg, m2 = 2kg and F m₁ my m₂ Figure 3.29: Problem 3.2 (i) What is the acceleration of of the system. (ii) What is the contact force between box 1 and box 2? (iii) What is the contact force between box 2 and box 3?