simple hydrolic system

We have at this simple hydrolic system 2 piston and liquid between the two piston , we alway use this system to rise load up , when we want to do this we put the load on the piston which has the biggest area , we make a difference between the areas of the pistons , to get high force which will be more than the force which we can get it by hand or leg by human , when we start to down the left piston by hand or leg , the pressure on the piston increase and on the other hand the pressure must be equal to left side , this process result to rise the load up because the area on the other hand is biggest than the left , and by the low ( pressure = force / area ) we get suitable force to rise the load up .