Three boxes rest side-by-side on a smooth horizontal floor. Their masses are 1.05 kg, 3.55 kg, and 5.20 kg, with the 3.55 kg one in the center. A horizontal force of 33.0 N pushes on the 1.05 kg mass which pushes against the other two masses. What is the contact force between the 3.55 kg and 5.20 kg boxes? Three boxes rest side-by-side on a smooth horizontal floor. Their masses are 1.05 kg, 3.55 kg, and 5.20 kg, with the 3.55 kg one in the center. A horizontal force of 33.0 N pushes on the 1.05 kg mass which pushes against the other two masses. What is the contact force between the 3.55 kg and 5.20 kg boxes? @Mathematics

Question

Three boxes rest side-by-side on a smooth horizontal floor. Their masses are 1.05 kg, 3.55 kg, and 5.20 kg, with the 3.55 kg one in the center. A horizontal force of 33.0 N pushes on the 1.05 kg mass which pushes against the other two masses. What is the contact force between the 3.55 kg and 5.20 kg boxes?  Three boxes rest side-by-side on a smooth horizontal floor. Their masses are 1.05 kg, 3.55 kg, and 5.20 kg, with the 3.55 kg one in the center. A horizontal force of 33.0 N pushes on the 1.05 kg mass which pushes against the other two masses. What is the contact force between the 3.55 kg and 5.20 kg boxes?  @Mathematics