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Introduction to Glider Flying > Aerodynamics of Flight > Forces of Flight
Three forces act on an unpowered glider while
in flight—lift, drag, and weight. Thrust is another force
of flight that enables self-launch gliders to launch on their
own and stay aloft when soaring conditions subside. The theories
that explain how these forces work include Magnus Effect, Bernoulli’s
Principle, and Newton’s laws of motion. [Figure 3-2]
Figure 3-2. The forces that act on
a glider in flight.
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