Aerodynamics forces on aircraft
In a Level constant velocity flight : Thrust = Drag and Lift = Weight.
In a Level constant velocity flight : Thrust = Drag and Lift = Weight.
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Newton's Law of inertia, "A body in motion will continue in motion until an external force applied on it"
So once aircraft attain cruise speed, it will fly at a constant velocity - and at that point, Thurst = Drag.
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Due to Air drag, the engines provide power to overcome drag.
When the Thrust exceed Drag, the aircraft accelerate (F=ma)
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