i know the usual examples of Pascal's principle (PP) and applications to pistons involves applying a force on the smaller area piston resulting in the amplified force of the large area piston. My question is kind of backwards. The numbers are a little big but just humour me... data: area of small piston is 1 square meter area of large piston is 10000 square meter the fluid medium is water the downward force of the larger piston is 10 million newtons the depth of the bottom of the large piston is 100 meters. gravity is present My question is 2 fold: 1. What is the the maximum theoritical distance the smaller piston can be pushed upward towards the sky? 2. Isn't the column of water in the small piston with the increasing height going to cause a large pressure (because of gravity) so as to limit the downward pressure from the larger piston? In other words, isn't the weight of the fluid taken into account when you answer this question?