Aerodynamic center

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What Wikipedia says

In aerodynamics, the torques or moments acting on an airfoil moving through a fluid can be accounted for by the net lift and net drag applied at some point on the airfoil, and a separate net pitching moment about that point whose magnitude varies with the choice of where the lift is chosen to be applied.

Excerpt from the Wikipedia article “Aerodynamic center”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: F l a n k e r, Public domain, via Wikimedia Commons.