Final answer:
The question pertains to the physics of a ladder resting against a wall and requires an understanding of forces and static friction to prevent slipping.
Step-by-step explanation:
The question addresses the physics of a ladder leaning against a wall. Specifically, it involves calculating the reaction forces and the coefficient of static friction required to prevent the ladder from slipping. The safety guideline mentioned that ladders should not have a pitch exceeding 90 degrees from horizontal.
It is relevant to ensuring ladders are used safely to avoid accidents. However, an exception is made for fixed ladders in conical sections of manholes. To analyze the forces acting on a ladder, we consider a scenario where a uniform ladder is placed on a rough floor against a frictionless wall.
We use principles such as equilibrium of forces and moments around a point to find the reaction forces at the base of the ladder provided by the floor, as well as the force exerted by the wall. Additionally, the coefficient of static friction is necessary to counteract any possible sliding at the base.