The discussion revolves around the dynamics of a can with a hole, specifically examining the forces acting on the can when air escapes versus when air is sucked in. Participants explore the pressure gradient forces and the resulting motion of the can in both scenarios.
Participants express differing views on the mechanics of the can's motion in relation to air movement, indicating that multiple competing perspectives remain unresolved.
There are assumptions regarding the pressure dynamics and the mechanical interactions between the can and the surrounding air that are not fully explored or defined, leading to potential gaps in understanding.
Individuals interested in fluid dynamics, mechanics, or those studying the principles of pressure and motion in gases may find this discussion relevant.
Why do you think it does not move ?versine said:
Because I saw the answer lol.Baluncore said:
Are you asking why the first container will accelerate? Imagine the gas exerts the same pressure on all walls. All wall parts have an opposite wall part, and their opposite forces cancel. Except for the piece of wall opposite to the hole, which has no opposite wall part, and thus the force acting on it is not canceled. So the whole container will accelerate to the left.versine said:
The second container will initially accelerate to the right for the same reason. The exterior pressure force on the wall part opposite to the hole is not canceled, because there is no wall opposite to it.versine said: