A ladder of length L is shown below leaning against a smooth wall. Suppose that the ladder is uniform and has a weight of 300 N. How large a friction force must exist between the ladder and the ground to keep the ladder
stationary? What is the minimum coefficient of friction required?

Did you ever figue this

answer and explanation;

composition refers to both the types of minerals within a rock and the overall chemical makeup of the rock while texture refers to the size and arrangement of the minerals or grains that make up a rock. both composition and texture can be used to classify rocks, such as igneous rocks. texture describes how the rock became solid or crystallized from liquid, melted rock. composition of a rock describes the minerals that make up a particular rock.

Iwould think it would be 2.6