Recent content by Michael1160

Well, you really cain't dissipate momentum (you can dissipate energy) However, if you are talking about the collision of two molecules with different masses, then I may see your point. However, wouldn't that just slow down the momentum flow? Of course, if you were to have a glancing...

I re-read the article a few more times. I think the author is talking about a momentum flow reaching the earth...now this makes more sense.

[ Sure, I agree that they are not derivable from each other, I guess I should have stated it as follows: First Law : The velocity of objects don't change unless there is a net force. Objects just don't spontaneously change their velocity at will. Second law: If an...

ARMAN That is not a stupid question at all! Helicopters due just that, the weight of the aircraft is supported by the thrust of the rotor (which is nothing more than a horizontal propeller) Also, various airplanes have tried this approach...Harrier...V-22 Osprey..etc. The problem is the...

). I will agree that if you include "everything" in your system that momentum will be conserved. However, this would eventually lead to us including the mass of the earth, which due to its "masssive" size would lead to velocity changes so extremely small, as to be negligible. Also, as...

[ Nuclear reaction?...creation of energy?...where are you getting that from? We are talking about regular everyday physics here...Im not sure how you interperted momentum not being conserved as having anything to do with nuclear physics. Every basic physics books explains how...

FredGarvin: Thank you for the feedback. Ok..a view of how Bernoulli can be seen as a form of Newton's second law F=ma according to the work-energy theorum. in order to change the kinetic energy of an object, work must be done. Work=Force X Distance Wether the force comes from internal...

NAM SAPPER Thanks for the feedback! However, I must disagree with you on some points. Let's look at an example: You have a cylinder, with a piston in it. You have a molecule that is traveling towards the piston in the positive X direction. The molecule strikes the piston, applying a...

Rocketboy: Thank you for your compliments. Yes, my degree is actually in Aeronautical Science which actually deals with the physics of flight and applied flight mechanics. I have also completed courses in aircraft flight testing and evaluation, aircraft performance and design, and other...

I would like to review some principles, as well as pose some questions, to this highly intelligent community. As such, feedback of ideas, or comments, or even snotty remarks would be appreciated. Classical physics is built on Newton's laws. As such, Newton's laws always apply somewhere...

I always forget to include something From Newtons third law, the bending of the streamlines back up to the freestream direction and velocity, should reduce the lift slightly...and it does. This can be seen from a pressure distribution stand point also. As long as the fluid (streamlines)...

I recently read an article where the author stated that the momentum transferred to the air by a passing wing will eventually strike the earth, even from a high cruise altitude (in other words, out of ground effect) I have a problem with this for the following reasons, feedback would be...

Also, I meant to add that Bernoulli's principle, and all of Newtons Laws are implicitly buried in this whole flow field about the wing.

cyrusabdollahi Curvature is just the rate of change of direction. I know it is easy to see how the bottom of a flat plate will change the direction of the fluid elements impacting it, so we will look at that first. There are only two ways that a fluid medium can impose forces on a solid...

CYRUSABDOLLAHI This is the equal transit times concept, and it is an absoulte myth. If you look at the stream pattern of a lifting airfoil, with the fluid elements approaching the airfoil, the fluid element that goes over the top of the airfoil will indeed reach the trailing edge long before...