Answer:
amount of grit on the sandpaper
Explanation:
From the information provided in the question it can be said that the inconsistency in this statement is the amount of grit on the sandpaper. That is because since the box is being used in both scenario's it is consistent. But in order to actually determine whether the statement is true depends on the amount of grit on the sandpaper which is applying opposite force and would thus determine which actually takes more force to do.
