biomechanic/physics
posted by meder .
A person applies an 80N pulling force 25 degrees counterclockwise with respect to the right horizontal to a 100N box. The coefficient of static friction between the box and the floor is 0.85. Will the box slide?

biomechanic/physics 
meder
, what effect on Flim was produced by a) changing the nature of the surfaces, b) changing the normal force, and c) changing the area of contact between the surfaces? Be sure to cite specific results that support your responses to parts ac.
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