külgjõude
Küljajõude, meaning "side forces" in Estonian, refers to lateral forces or pressures that act perpendicularly to the primary direction of motion or stress. In physics and engineering, these forces are crucial to understand in various contexts. For instance, when an object moves along a curved path, a centripetal force acts towards the center of the curve, but this is often a result of various side forces. Friction is a common example of a side force, acting parallel to the surface of contact and opposing motion. In aerodynamics, lift is a side force relative to the direction of airflow over a wing, enabling flight.
In structural engineering, küljajõude can arise from wind loads on buildings, seismic activity causing ground motion,