The discussion revolves around calculating the pressure required for a hydraulic car lift, specifically focusing on the diameters of the pistons and the mass of the car being lifted. The subject area includes principles of hydraulics and pressure calculations.
Some participants are exploring the relationship between the pressures on the small and large pistons, while others are clarifying the calculations needed to find the pressure based on the weight of the car. There is a recognition that the problem may not explicitly ask for the force needed.
Participants note that the problem involves assumptions about the hydraulic system and the relationship between the two pistons, as well as the need for specific values to perform calculations.
Sure, but I note that you don't need to know the smaller diameter for that. I would have expected the question to ask for the force needed. Maybe it asks for that later?Douna2nd said:The pressure on the small piston is equal to the pressure of the large piston so I'm going to calculate the pressure of the large piston by the rule F/A force =mg where g is the force of gravity and area = pi diameter square over 4 ?