Final answer:
The force of friction does not increase directly with an increase in angle.
Step-by-step explanation:
The force of friction does not increase directly with an increase in angle. The force of friction depends on the normal force and the coefficient of friction between the surfaces in contact. If all other factors remain constant, increasing the angle of an inclined plane or an object's inclination will not directly increase the force of friction. However, it may change the components of the forces acting on the object, which in turn can affect the frictional force.