An airplane takes off when the upward force beneath its wings is greater than the downward force of gravity. Starting from when
the airplane is standing still, describe the sequence of events that has to happen for the upward force to become greater than the downward force of gravity.
The engines start working by burning fuel, this in turn starts turning the engine blades and the blades suck in air and push it out from the back of the engines. This creates a force that pushes the airplane forward. As the volume of air that goes in and out of the engines increase, so does the kinetic energy the airplane has. At a specific speed, depending a lot of factors such as the weight of the airplane, the length of the wings etc, the force that the moving air provides from beneath the wings surpasses the force of gravity that is applied to the plane, the plane takes off.
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