70. Two heavy boxes are at rest as shown in Figure 6.(4.1) K/U TA C(a) Find the normal force on box 1 and the normalforce on box 2 from the floor.(b) Find the normal force on box 1 and the normalforce on box 2 from the floor if a person pulls upon box 1 with 55 N.(c) Find the normal force on box 1 and the normalforce on box 2 from the floor if a person pulls upon box 2 with 55 N.(d) Compare and contrast your answers to (b) and(c) and explain why some normal forces changedwhile others did not.box 1m₁ = 25 kgbox 2m₂ = 45 kgFigure 6

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