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In your analogy the hand represents the rocket and the rock represents the out gas or expanding gasses
My question remains, "how the thrust occurs in space that results in that momentum"?
Again it is really great that you take the time to try to explain this, Thank you, all.E is obvious, M and m are obvious, but the equation doesn’t explain how in the physical world, the rocket attains V? Equations, formulas and theories are not going to convince me. If rockets work in space, (and I’m not saying they do or don’t, just that I don’t see how), it could be explained using actual parts and product, their actions and reactions, by and to particles and substances. Couldn’t it??
Jeff wrote,"If you were to throw 1000 rocks simultaneously at object it will move. The rocks have left the hands before they start to move the object so where is the push backwards? It is the recoil of the rocks from the surobjeface of the object being moved as per Newton."In your analogy the hand represents the rocket and the rock represents the out gas or expanding gasses if I understand your analogy.In space there is no object for the thrown rocks to strike, so the thrown rock will continue indefinately, there is no recoil, and the hand will see no return thrust; just like I see the rocket in space, no thrust. Im sorry if my view seem to be anything but respectful, I am not intending to be argumentitive but this analogy doesn't work for me.Thank you for your understanding of my questions. and thank you for your attemp the help me understand this, but I still don't understand it.
Alan wrote, "then give an impulse to m so that it attains a velocity v,"I understand all that and I agree except for that one little part, I seem to be hung up on again or still, how is the impulse provided, where does V come from??
Before momentium is conserved, it must be stablished or its just potential, right?
Do submarines interest you?
I have a propulsion system that will put submarines over a hundred miles an hour. EASILYG-Force that will cause one to pass out, move through water like it was air.On everything that I am, everything that I have, I guarentee it!Something like that worth anything $$, to whom? and how would one, "cash it in"?
Jeff wrote,"If you were to throw 1000 rocks simultaneously at object it will move. The rocks have left the hands before they start to move the object so where is the push backwards? It is the recoil of the rocks from the surobjeface of the object being moved as per Newton."In your analogy the hand represents the rocket and the rock represents the out gas or expanding gasses if I understand your analogy.In space there is no object for the thrown rocks to strike, so the thrown rock will continue indefinately, there is no recoil, and the hand will see no return thrust; just like I see the rocket in space, no thrust.
first Thank you for your kind responce.Now your analogy is completely bogus,
as there is something foolish people like me call ATMOSPHERE to resist the ball and allow it to accelerate the person on the skateboard that DOES NOT EXIST IN SPACE.
This evening I read for the first time about EmDrive, this is logical to me foolish as I may seem to you. but no one and that includes you Sir has presented ONE element of logic that explains how rockets can thrust against nothing.
Sorry guys if I let my emotions effect me there, pmbphy is not patient like you other Gentleman, I noticed that in some of his other response.
Everyone keeps saying Newton’s law I totally agree but how does it apply if there is nothing to push back?
Einstein to his the- I guess I can understand why I probably up set pmbphy, but that is not my intention.
Pmbphy I am a master electrician not a physicist, that’s clear.
I am also going to try to understand what Pmbphy wrote between the insults.