Definition of Equilibrium:
Equilibrium refers to a state of balance that exists within a physical body or system when the total effect of all the forces acting on it is zero. This means that the net force acting on the body is equal to zero, and the body remains in a stationary position or moves with a constant velocity.
In aerodynamics, equilibrium is specifically related to the balance of opposing forces acting on an aircraft during steady, unaccelerated flight conditions. This state of equilibrium can be achieved when the forces of lift, weight, thrust, and drag acting on the aircraft are all in balance, allowing the aircraft to maintain a stable flight path and altitude. The ability to achieve and maintain equilibrium is essential to the safety and stability of any physical system, including aircraft, structures, and even the human body.
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