Direction of Lift Force (Interactive)

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Multiple choice question: Based on flow around an object, what is the direction of the lift force? Interactive screencast. Made by faculty at the University of Colorado Boulder Department of Chemical and Biological Engineering.
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You should be able to click on an option at the end of the video to see the correct answer. However, I think you have to have the annotations on and be accessing from a computer.

LearnChemE
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The authors have two wrong scientific approaches: researching the creation of Lift force and Low pressure at upper side of the wing, relative to the ground surface and Earth. I explain the aerodynamic cavitation and existence of Lee side aerocavern, and creation of Aerodynamic force.

vlatkopopovski