Pascal's Principle : A change in pressure applied to an enclosed fluid is transmitted undiminished to every point of the fluid & the walls of the container .APPLICATIONS ON PASCAL’S PRINCIPLE :
THE HYDRAULIC PRESS
The ideal press consists of two pistons of areas ( a , A ) enclosed between them incompressible liquid as in figure | |
When a small force ( f ) acts on the small piston ( a ) , it exerts a pressure ( p = f/a ). | |
The increase in pressure P is equally transmitted to every part of the liquid & to the walls of the container according to Pascal's Principle till it acts on the large piston ( A ) to produce very large force ( F = P x A ) causes the load to rise .
To keep the large piston (A) at equilibrium with the small one (a) a load = F is placed on the large piston .
\ P = f/a = F/A
\ F a A ( Force multiplying device)
The hydraulic press is applied in our daily life in:
1.Car’s hydraulic breaks.
2.Car’s hydraulic jack.
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