B Space propulsion without mass ejecting

AI Thread Summary
The discussion centers on a theoretical propulsion system involving a box in outer space containing a slinky connected at two points, A and B. When a pulse is sent from A, the box moves to the right, but it stops when the pulse is absorbed at B, raising questions about propulsion without mass ejection. The conversation highlights the conflict with Newton's third law, which complicates the feasibility of such a system. Additionally, the topic of reactionless drives, including the EMDrive, is noted as a forbidden subject, leading to the closure of the thread. The exploration of this concept ultimately leads to unresolved questions about propulsion mechanisms in physics.
leafy
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TL;DR Summary
We have a box sit in outer space. Inside a box is a slinky connect at two points A and B. Pulses of longitudinal wave is given at A and absorbed at B. Can this system propelled through space?
When the pulse is given at A, the box move to the right. When it is absorbed at B, the box stop.
 
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leafy said:
Summary:: We have a box sit in outer space. Inside a box is a slinky connect at two points A and B. Pulses of longitudinal wave is given at A and absorbed at B. Can this system propelled through space?

When the pulse is given at A, the box move to the right. When it is absorbed at B, the box stop.
Newton's third law is the problem here.
 
leafy said:
Summary:: We have a box sit in outer space. Inside a box is a slinky connect at two points A and B. Pulses of longitudinal wave is given at A and absorbed at B. Can this system propelled through space?

When the pulse is given at A, the box move to the right. When it is absorbed at B, the box stop.

Reactionless Drives are on the list of Forbidden Topics. Thread is closed.
Forbidden Topics said:
EMDrive and other reactionless drives
See https://www.physicsforums.com/threads/nasas-em-drive.884753/
 
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