Never reducing propellant for deep space propulsion [duplicate]

in this sketch suppose the velocity of ball is 0 and it is out from the system and stayed in 0 velocity due to two electromagnets and these two magnets are attached with two springs and both springs are in stretched position towards up and down side . The ball is expelled from the gun system and got 0 velocity after expelling from the system by using these electromagnets and a force is also applying on these magnets and springs are in stretched position. you will say that engine will not move as net force is ZERO but if we release these spring then what will be happened with engine as after releasing these springs both will work to propel the engine ? should it move or not or can we modify the direction of this engine ? please keep aside the issue of ball retrieving. Thanks

• You're asking about a perpetual motion machine. Your question details even tell you what's wrong with your question--net force is still zero, even with the springs. Perpetual motion does not work. – Justin Eiler Sep 30 '16 at 2:19
• Why did you start a new identity for a question that will have much the same answers as your last question? Admittedly, your current question underlines you did not understand those answers, but that's no good reason to establish a new identity and re-ask (effectively) the same question, which boils down to "Can we break - 'for every action, there is an equal & opposite reaction'?" – Andrew Thompson Sep 30 '16 at 2:20
• "please keep aside the issue of ball retrieving." But that is precisely the entire problem you are apparently trying to solve. "Assume that we don't have to expend propellant. Now, I have a way for rockets to work without expending propellant!" That's just not going to fly. – Nathan Tuggy Sep 30 '16 at 2:49
• suppose ball is also a magnet but what happened when stretched springs will get back their rest position again after Zero net force? – vikram-gupta11 Sep 30 '16 at 7:19