Hydraulic Engine: Ball Spin, Stop & Why?

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The discussion centers on the behavior of a metal ball in a hydraulic engine scenario. If the ball, air, and oil are stationary, it will not spontaneously spin. Air pressure can cause the ball to spin when forced through a valve, but it will eventually stop due to viscous drag forces. Concerns are raised about the pressure balance in the sealed container, questioning why air would move past the ball. The conversation emphasizes the principles of physics governing motion and the importance of adhering to forum rules against discussing perpetual motion.
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What will happen with metal ball in the below picture? it will spin? if yes, when it will stop and why? I am not very faimiliar with physics, but I am sure that ball must spin :D

http://www.cagof.com/Untitled.png
 
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If the ball, air, and oil are all initially stationary then it will not suddenly start to spin.

Please be aware of the forum rules prohibiting discussion of perpetual motion machines.
 
Dale said:
If the ball, air, and oil are all initially stationary then it will not suddenly start to spin.

Please be aware of the forum rules prohibiting discussion of perpetual motion machines.

air will be pressed through valve
 
Then it could start spinning. It would stop spinning when viscous drag forces stop it.
 
The container appears sealed at the bottom so the pressure in the oil is likely to be the same/similar to that of the air - so why would the air go past the ball?
 

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