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Please Respond To The Following Below This Is For A Physical Science Discussion

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Running head: LIFT AND DRAG 1

Lift and Drag

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LIFT AND DRAG 2

Lift and Drag

Lift and drag are the two fundamental and opposing forces that allow the generation of

motion in an airfoil. The creation of pressure differences between the top surface of the airfoil

and the bottom surface create differential pressure which amounts to either a lift or drag. These

aerodynamic forces are easily explained using the physical principles of Newton’s Third Law of

Motion and Bernoulli’s Effect. However, it is necessary to define these two forces commonly

experienced with flight before delving into the operational principles. Lift is the force that pushes

an object upward against its weight. This force is generated by the movement of air around the

object. Drag, on the other hand, is the force that slows down the forward movement of an object.

The Newton’s Third Law of Motion can be simply stated : “for every action, there is an

equal and opposite reaction.” An airfoil works by redirecting the flow of air. For instance, the

angle of attack that exists in an aircraft works by forcing the oncoming air downward. According

to the effect of Newton’s third law, the air then works to push the airfoil upward. The resulting

action and reaction then produce lift in the wing. This happens for all other types of airfoils.

Drag, on the other hand, is the reaction to the airfoil’s thrust. When an object comes against the

oncoming air, the resistance offered to motion is due to the action-reaction relationship.

Therefore, the object resists motion thus dropping in speed. With increased drag that may be a

result of the shape of the airfoil, thrust must be increased as well so that the object gains a

forward motion.

While explaining the lift and drag effects on an airfoil by Newton’s Third Law may be a

little easy, a more complicated means of explaining the two is the Bernoulli Effect. This

principle is centered on differences in pressure which cause forces that generate lift and drag. An

airfoil is made in a form such that the upper surface has a larger curvature than the lower surface.

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Running head: LIFT AND DRAG 1 Lift and Drag Name Institution LIFT AND DRAG 2 Lift and Drag Lift and drag are the two fundamental and opposing forces that allow the generation of motion in an airfoil. The creation of pressure differences between the top surface of the airfoil and the bottom surface create differential pressure which amounts to either a lift or drag. These aerodynamic forces are easily explained using the physical principles of Newton’s Third Law of Motion and Bernoulli’s Effect. However, it is necessary to define these two forces commonly experienced with flight before delving into the operational principles. Lift is the force that pushes an object upward against its weight. This force is generated by the movement of air around the object. Drag, on the other hand, is the force that slows down the forward movement of an object. The Newton’s Third Law of Motion can be simply stated: “for every action, there is an equal and opposite reaction.” An airfoil works by redirecting the flow of air. For instance, the angle of attack that exists in an aircraft works by forcing the oncoming air downward. According to the effect of Newton’s third law, the air th ...
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