Ens

1. HYDROSTATICS
BTECH GROUP 6

2. CHARACTERISTICS OF HYDROSTATICS
1. Amount of pressure increases with an increase in depth
o The increase in depth increases the weight of water exerted on an area of container
o Increase in normal force concentrated onto the bottom of container by fluid
o Lead to an increase in normal hydrostatic pressure

3. CHARACTERISTICS OF HYDROSTATICS
2. Liquid pressure remain the same in all direction at a given depth
o since weight of fluid is the same at a particular height
o Pressure does not change with change in horizontal plane but with change in elevation
(height).
o Therefore the hydrostatic pressure at a given height remains constant

4. CHARACTERISTICS OF HYDROSTATICS
3. They are not affected by shape or cross section of the container i.e.
wheather its circular, rectangle etc.
4. Hydrostatic pressure is transmitted equally when force is applied to
them from one point in the same container.

5. PASCALS PRINCIPLE
As already seen from property of a fluid pressure i.e.. Pressure applied
at one point is transmitted equally this is Pascal's principle
It states that in a fluid mechanics, the pressure changes at any point in
a confined container is transmitted equally through out the container
to every point of the fluid.

6. PASCALS PRINCIPLE
• Considering “Pascal’s principle” there has been many inventions
made which are part of our daily lives such as hydraulic brakes and
hydraulic lifts e.g. jib crane
• All these devices and many other related devices works using the
same principle.

7. DEVICES USED TO MEASURE FLUID PRESSURE
• Pascal's principle gives an advantage of making fluid pressure
measuring devices here are so many devices used to measure
hydraulic pressure, these are;
1. Barometer
2. Manometer
3. Piezometer or pressure tube
4. Burdon gauge

8. DEVICES USED TO MEASURE FLUID PRESSURE
• Manometer
It is commonly used to measure small and moderate pressure
differences
• A manometer mainly consists of a U-tube transparent grass
containing one of the following fluids i.e. mercury, water, alcohol, etc.
The most common type of the fluid used is mercury since can be used
to measure large pressure differences as it is heavier than other fluids.

9. MANOMETER
• suggests that a fluid column can be used to measure pressure
differences. Below is the figure of a manometer

10. MANOMETER
OPERATION
• One side of the tube is connected to fluid that is to be measured
• While other is left open to experience atmospheric pressure
• Consider the manometer shown in Fig. above that is used to measure
the pressure in the tank.
• At first the before connected to tank pressure was at 1 but after
connected the pressure rose to particular height h
• The column h can be used to find pressure

11. Center of pressure