Q.

Which among the following is the correct formula for lift?

A. D = Cl * A * 0.5 * r * V2
B. D = Cl * A * 0.5 * r * V*2
C. D = Cl * A * 0.5 * r * V/2
D. D = 0.5 * r * V
Answer» A. D = Cl * A * 0.5 * r * V2
Explanation: The lift force is a force that acts in the perpendicular direction to that of the relative flow velocity. It acts in the perpendicular direction with respect to a surrounding fluid flow. Thus, the correct option is D = Cl * A * 0.5 * r * V2.
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