Question

state pascal law or defination

Answer 1

Answer:

Pascal's law is a principle in fluid mechanics that states that a pressure change occurring anywhere in a confined incompressible fluid is transmitted throughout the fluid such that the same change occurs everywhere.

Answer 2

Answer:

According to Pascal’s law,

The external static pressure applied on a confined liquid is distributed or transmitted evenly throughout the liquid in all directions.

The static pressure acts at right angles to any surface in contact with the fluid. Pascal also found that the pressure at a point for a static fluid would be same across all planes passing through that point in that fluid. Pascal’s law is also known as Pascal’s principle.Pascal Law Formula

Following is the formula of Pascal law:

F = PA

Where,

F is the force applied

P is the pressure transmitted

A is the cross sectional area

Example of Pascal’s Law

Let us understand the working principle of Pascal’s law with an example.

A pressure of 2000 Pa is transmitted throughout a liquid column due a force being applied on a piston. If the piston has an area of 0.1 m2, what is the force applied?

This can be calculated using Pascal’s Law formula.

F = PA

Here,

P = 2000 Pa = N/m2

A = 0.1 m2

Substituting values, we arrive at F = 200 N

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