Flashcard 14 - Physics Flashcard Set for the HESI Exam

–50 N

Since the crate is not moving, the forces in the horizontal (x) direction must be balanced. The applied force is 50 newtons to the right, so the frictional force must be an equal negative value of newtons to the left to keep the net force zero. This is a case of static equilibrium where friction exactly opposes the applied force.