What is the turning moment produced by the plane about the pivot?

The turning moment, or torque, produced by a plane about a pivot is calculated by multiplying the force applied by the distance from the pivot point to the line of action of the force. Mathematically, it is expressed as τ = F × d, where τ is the torque, F is the force, and d is the perpendicular distance from the pivot to the line of action of the force. The direction of the turning moment is determined by the orientation of the force relative to the pivot. This concept is crucial in understanding the mechanics of flight and stability of the aircraft.