What is a Hydraulic Jack? How does hydraulic jack work ? 

A hydraulic jack is a jack that to push against a piston by using a liquid, which is based on Pascal’s Principle. The principle states that the pressure in a closed container is the same at all points. If there are two cylinders connected, it shall apply force to the smaller cylinder, will result in the same amount of pressure in the larger cylinder. However, since the larger cylinder has more areas, the resulting force will be greater. In other words, an increase in area leads to an increase in force. The greater the difference in size between the two cylinders, the greater the increase in the force will be. A hydraulic jack operates based on this two cylinder system.