How does Hydraulic Press stop so fast after shaterring something? Why isn’t there any momentum?
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Liquids are not compressible to any significant degree. So even if you have a liquid with high pressure before you shatter something when the cylinder moves a small bit the pressure inside drops and there is no force behind it.
Even if the direction of the moment is down you need to create a vacuum in the system for it to move if no more airflow in. that means air pressure keeps it up.
A pneumatic system with air pressure will behave differently because it is compressible so if you use it and you shatter what is in the way the pressure is still high when the cylinder moves a bit. It will likely move as far as it is possible to move before it sops.
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