/There are four principles at work when it comes to airplanes; thrust, drag, weight, and lift.
The propeller creates thrust as the plane moves forward while drag provides resistance.
Lift is created when air hits the wing. Notice how the wings are curved at the top and flat at the bottom. Air will move underneath as well as moving over. The air going over the top of the wing creates less pressure than the air going over the bottom of the wing, creating lift and pushing the plane up.
Basically when there is more thrust than drag, and lift is able to balance out or be greater than weight, flight occurs.
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The propeller creates thrust as the plane moves forward while drag provides resistance.
Lift is created when air hits the wing. Notice how the wings are curved at the top and flat at the bottom. Air will move underneath as well as moving over. The air going over the top of the wing creates less pressure than the air going over the bottom of the wing, creating lift and pushing the plane up.
Basically when there is more thrust than drag, and lift is able to balance out or be greater than weight, flight occurs.
Does that make sense?/