Hydraulics is a science which deals with mechanical properties of liquid. It is basically liquid form of pneumatics. In pneumatics, we use compressed air and in hydraulics we use compressed liquid. When we compress liquid, it gets pressurized and It use power of pressurized liquid for doing various tasks.It works on the principle of Pascal Law which states that when there is an increase in pressure at any point in a confined fluid, there is an equal increase at every other point in the container.
You can find hydraulic machines from your backyard to big construction site.
It works on very simple concept that when force applied to incompressible liquid at one point, it gets transmitted and multiplied at another point. Multiplication factor of this force depends upon the area of piston.
How Hydraulic Machines Work ?
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Hydraulic floor crane : It is a low cost alternative for material handling equipments.It can lift 1000 of Kg by just transmitting forces from point to point through a fluid.
Hydraulic lift or Machine
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Idea for school going kids at yahoo answers.
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