PROJECT WORK -APPLICATIONS OF PASCAL’S PRINCIPLE- CLASS 9

 Applications of Pascal’s principle

Title of the project : Applications of Pascal’s principle in our daily life.

Objectives : To know the working principle of pascal’s principle.

Material required : internet, science magazines, text book etc.,

Required procedure: we collect information of applications of pascal’s principle in our daily life. We collect some pictures and information of some apparatus which works on the pascal’s principle.

PASCAL’S PRINCIPLE:

A change in pressure at any point in an enclosed fluid at rest is transmitted undiminished to all points in the fluid.

Pascal’s principle states that external pressure applied to a enclosed body of fluid is transmitted equally in all directions throughout the fluid volume and the walls of the containing vessel.

APPLICATIONS OF PASCAL’S PRINCIPLE:

1) Hydraulic Jacks: Hydraulic jacks are used to lift a heavy load such as when changing a car tyre. When the handle is pressed down, a valve closes and the small piston forces hydraulic fluid through another valve to the larger cylinder. The pressure transmitted results in a large force on the load. Hydraulic jacks tend to be stronger and can lift heavier loads higher, and include bottle jacks and floor jacks.

2) Hydraulic lift: Hydraulic lifts are used to raise cars in a motor workshop. The machine is equipped with a small cylinder connected to a large cylinder. Both cylinders are filled with oil. Compressed air is introduced into the small cylinder in which the compressed air exerts a pressure on the surface of the oil. This pressure is transmitted by the oil to the large cylinder where the pressure acts on a large piston to produce a force which is large enough to lift a car.

3) Hydraulic goods lift: it is a lift which lifting of the material from one floor to another at different levels. They are in various shape, size and capacity as per our requirement.

4) Hydraulic press: A hydraulic press is a device using a hydraulic cylinder to generate a compressive force. It uses the hydraulic equivalent of a mechanical lever, and was also known as a Bramah press after the inventor, Joseph Bramah, of England.

5) Hydraulic brake : The hydraulic brake is an arrangement of braking mechanism which uses brake fluid, typically containing ethylene glycol, to transfer pressure from the controlling mechanism to the braking mechanism.

6) Artesian aquifer: An artesian aquifer is a confined aquifer containing ground water under positive pressure. This causes the water level in a well to rise to a point where hydrostatic equilibrium has been reached. A well drilled into such an aquifer is called an artesian well. If water reaches the ground surface under the natural pressure of the aquifer, the well is called a flowing artesian well.

7) Hydraulic arm: A hydraulic arm works by using high fluid pressure, created by a pump, to force a piston in a cylinder to move. As a valve is opened one way, the fluid is allowed to enter the cylinder and force the piston to move. These arms are used to assembly lines of mega factories to assemble the various parts of product and also to paint vehicles. They are also used in earth movers to pickup heavy weight and keep them where required. The principle being used in JCBs, Automobiles and lifters.

LEARNING OUTCOME: We understand the applications of pascal’s principle.

Conclusion :

We collect the data about the applications of Pascal’s principle in internet and some articles in the science magazines. Pascal’s principle used in many sectors.