Figure 7-47 shows a cold package of hot dogs sliding rightward across a frictionless floor through a distance d = 21.5 cm while three forces are applied to it. Two of the forces are horizontal and have the magnitudes F1 = 5.00 N and F2 = 1.00 N; the third force is angled down by = 65.0° and has the magnitude F3 = 4.00 N.

Question

Figure 7-47 shows a cold package of hot dogs sliding rightward across a frictionless floor through a distance d = 21.5 cm while three forces are applied to it. Two of the forces are horizontal and have the magnitudes F1 = 5.00 N and F2 = 1.00 N; the third force is angled down by  = 65.0° and has the magnitude F3 = 4.00 N.

F1 is directed to the right, and f2 is directed to the left.  
(a) For the 21.5 cm displacement, what is the net work done on the package by the three applied forces, the gravitational force on the package, and the normal force on the package?
  J