Final answer:
Chord forces in a truss increase toward the center of the span, while web forces typically decrease. Tension in cables and ropes counteracts weight by its upward component, and in inclined planes, frictional forces and normal forces are crucial.
Step-by-step explanation:
The question refers to the behavior of forces in a truss system. In such systems, it is observed that chord forces increase toward the center of the span due to the greater distance from the supports and the distribution of loads. Conversely, web forces, which are the components of force in the web members of a truss (typically vertical or diagonal members), usually decrease toward the center of the span. This is because web members closer to the center often support less load than those closer to the supports, where the bending moment is usually higher.Considering forces in other contexts, such as the tension in cables or ropes, similar principles apply. The force of tension often has an upward component that can counteract other forces, such as weight in the case of a tightrope walker. When a cord is involved, the force of tension is generally directed away from the object to which the cord is attached. In scenarios involving objects on inclined planes, frictional forces and normal forces play significant roles in determining the resultant force and movement of the objects.