How do Newton's 3 laws affect flight?

Question

I need to know how newton's laws affect flight.

Answer 1

That's thought provoking. I'll give it a shot. Consider level flight constant speed.

1st law would probably balancing force of lift against gravity to maintain altitude producing drag which must be balanced by acceleration to maintain forward velocity.

2nd law relates Inertia, (tendency to maintain present speed?) as proportional to mass (related to density, independent of volume or force). Weight is gravity dependent, and will vary dependent on location. You can be weightless but you can't be mass-less. You can witness the affect when a Jet comes out of the chocks.

3rd law, equal and opposite reaction I have problems with except in rocket powered flight. Lift is due to Bernoulli's Principle, or Law. of movement of fluid through a pressure difference.

Lift is created on the top of the wing not under it due to the low pressure created by curvature of the wing. In fact it should be called; suck, not lift. Maybe it wasn't politically correct. Even Propellers and Jet engines pull into the low pressure in front of them. (you can say, jets suck!)

The only justification I can see, for third law is, the Aircraft has to constantly be overcoming imbalances, due to gravity, friction, drag etc.

Answer 2

I'll try to answer this is simple as possible without getting into advanced aero or fluid dynamics.

Newtons 3rd Law States:
"For every action, there is an equal and opposite reaction"

This most commonly is referred to in aviation with regards to the air striking the bottom of a wing when it is moving through the air. An airplane needs it's wings to create lift to fly and soar through the air. Although air striking the bottom of the wing isn't the only thing that creates lift, it's one of the most prominent way's Newton's 3rd relates to aviation.

The action is air striking the bottom of the wing when an airplane is in a "nose-high" or climbing attitude. The reaction is the wing being forced upward. This is the resultant force.

Think of it this way. You know when you're driving down the road and you stick your hand out the window? Well, you'll notice that, depending on how you place your hand, the air flowing around your hand will force your hand/arm upward. This is exactly how it would effect and airplane's wing.

Feel free to email me with any other questions.

Answer 3

Newtons 3rd law - Action and reaction - applis to propulsion: for any force applied to a mass, there is an equal resultant force in the opposite direction. Propulsion is the result of pushing the air (accelarating it) backwards, so the resultant force in opposite direction gives the push forward.

Answer 4

the plane desires raise to arise, thrust to get forwards yet in addition desires the different and equivalent reactionsa including drag and gravity for each action thers an equivalent and opposite reaction an merchandise that's shifting will save shifting till an exterior tension stops it a.ok.a drag and gravity

Answer 5

Here is everything you need to know about Newton's laws and their applications.
http://www.compadre.org/precollege/static/unit.cfm?sb=3