My name is Alexander FufaeV and here I will explain the following topic:

# How Does a Hydraulic Press Work?

Explanation

## Video

The hydraulic press is a container with two cylinders filled with an incompressible fluid (e.g. oil). The diameter of one cylinder is much larger than the diameter of the other cylinder.

If you now exert a force $$F_1$$ on the contact surface $$A_1$$ of the cylinder with the smaller diameter, you generate pressure ($$\mathit{\Pi} ~=~ F_1 / A_1$$) in the container. Since the fluid is incompressible, the generated pressure acts at all points of the container – including on the much larger contact surface $$A_2$$ of the other cylinder.

If, for example, a car is standing on the support surface $$A_2$$, it will be lifted with ease because the force $$F_2$$ on the second support surface is much greater than $$F_1$$, because in this case the following relationship applies:

Formula anchor

Rearranging with respect to the force $$F_2$$ results:

Formula anchor

As you can see, the force on the second bearing surface is greater by the factor $$\frac{A_2}{A_1}$$!