Final answer:
In Physics, when analyzing force interactions, the net force should be zero if the forces are balanced. The Pythagorean theorem is useful for finding resultant vectors at right angles, and free-body diagrams aid in understanding forces in equilibrium.
Step-by-step explanation:
The questions provided revolve around the concepts of force balance, vectors, motion, and free-body diagrams in Physics. It is important to understand that in a system where forces are in equilibrium, the net force acting on an object must be zero. This principle is critical when constructing accurate free-body diagrams and when analyzing force interactions in various scenarios.
Key Concepts in Physics