A box with weight of magnitude fg=2. 00n is lowered by a rope down a smooth plane that is inclined at an angle ϕ = 30. 0 ∘ above the horizontal, as shown in (figure 1) at left. The normal force acting on the box has a magnitude n=1. 73n, the tension force is 1. 00 n, and the displacement δx of the box is 1. 80 m down the inclined plane.