Emmett is lifting a box vertically. Which forces are necessary for calculating the total force?

The total force is the sum of the forces acting on the box. While Emmett lifts it vertically, the relevant forces are his applied force, Fₚ, upward and gravity, Fg, downward. The normal force and friction are not needed for this vertical lifting calculation, so the correct choice is “Fₚ and Fg.”

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