### Hydraulic Press

In this experiment, squeezing syringe to demonstrate Pascal's law.

**Educational phase:** fixation

#### Required aids

- two syringes
- liquid (colored water)
- food coloring
- plastic tubing
- stand
- clamps

#### Experiment instructions

#### Explanation

Pascal's law is used in many devices and one of them is the hydraulic press. In his principle work such as car brakes. It makes use of that pressure is the same in all locations and therefore need only act on one of the pistons.

#### Physical interpretation

Hydraulic press is one of many devices that use Pascal's law which tells us that the pressure of the fluid is the same in all places. Apply here the relationship:

p = \frac{F}{S}

,that is, if pressed smaller piston pressure is spread evenly in the liquid and eventually will affect the larger piston. We can therefore say that the true: \frac{F_{1}}{F_{2}} = \frac{S_{1}}{S_{2}}

, where F_{1}and S_{1}is the force acting on the smaller piston and its contents, F_{2}and S_{2}are a great force on the piston and its contents.