ocr: PRINCIPLES OF SCIENCE FLYING - FLIGHT, an object must - - Tpr - produce DACHIEVE a force that overcomes its weight. This force is called lift. For objects LIFT lighter than air, buoyancy provides lift. But objects Kinds of heavier than air, such as airplanes, create lift by Aircraft the movement ofair around their wings. LIFT - - - THRUST DRAG gas - - - l - L - - - - - 2 - - - - - L - - - 1 - - - - - A aan - - - - - - - - - - - - WEIGHT - Cor Related Machines
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