Hi, On Mon, Feb 8, 2016 at 6:05 AM, Vibrator ! <[email protected]> wrote:
So an effective N3 violation would allow you to create energy by > effectively towing your reaction mass along for free. Consider two > adjacent 1kg masses in free space connected via a perfectly elastic slack > tether: an impulse is applied between them, but because abracadabra, only > one moves, until they collide again; from either mass's frame of reference, > that detail is irrelevant - if we input 1 J of energy then that's all the > system has, and whether 1/2 a J resides in each mass or one has more than > the other may seem academic... > I followed your presentation, except for this part. It's not clear to me how someone might propose that a system comprising two masses connected by an elastic tether might be made to violate Newton's 3rd law. When the first mass, which is initially set in motion, begins to accelerate the mass that was left at rest initially once the tether becomes taut, its momentum will decrease as the momentum of the second mass increases, conserving momentum for the system as a whole. Eric
