Pascal’s Principle

Question 1

Can you define what pascal principle is?

Answer 1

Pascal principle is when a fluid in rest in a closed container and the pressure changes in without loss to every portion of the fluid and the containers of the walls.

Question 2

What is the pressure formula and what does each letter mean?

Answer 2

P= F/A P = pressure F= Force on the piston A = Area of piston cylinder

Question 3

What is hydrostatic pressure?

Answer 3

Hydrostatic pressure is pressure that is exerted by a guild at equilibrium at a given point within the fluid due to the force of gravity

Question 4

What’s is dynamics pressure?

Answer 4

Dynamics pressure is the kinetic energy per unit volume of a fluid. q = pu^2/2 q = dynamics pressure in pascals p = fluid mass density u = flow speed in m/s

Question 5

What are the differences between hydrostatic and dynamics pressure?

Answer 5

Hydrostatic pressure is the pressure resulting from a stationary fluid but dynamics pressure is arising from a moving fluid.

Question 6

What are pitot tubes and how do they work?

Answer 6

A pitot tube is a flow sensor that measures stagnation pressure and static pressure as well. These reading allow pilots to gauge airspeed and altitude. The front hole measures the stagnation pressure, while the side opening gauge static pressure. The difference between these two measurements is called dynamic pressure.

Question 7

Solve this example

Answer 7