Final answer:
The questions relate to statics in physics, focusing on calculating loads, tensions, and forces on various structures, using principles of equilibrium.
Step-by-step explanation:
The question appears to be related to statics, which is a branch of mechanics in physics. It deals with analyzing loads (force, moment) on physical systems in static equilibrium, that is, in a state where the relative positions of subsystems do not vary over time, or where components and structures are at a constant velocity.
Mechanics itself is a subject typically taught from high school to college-level courses. Calculation of loads on structural elements such as beams and struts, or determining the tension in cables and wires, usually involves using the principles of equilibrium where the sum of forces and moments equals zero.
Physics problems involving these concepts are essential for understanding how structures support loads and how forces are distributed through structural elements.