Aeroplanes can move left and right through various maneuvers, primarily banking, which involves calculating angles based on lift and gravitational forces. The bank angle creates a triangle where the vertical leg represents 1G, while the horizontal leg indicates the g-force during a turn. The specifics of the aircraft, such as its type and size, are crucial for understanding its performance and limits. Additionally, maintaining a constant turn requires coordination of rudder and throttle adjustments. Understanding these dynamics is essential for effective flight control.