*thrust.*This force is in the opposite direction to the force of gravity. Hence, it reduces the total force acting downwards due to gravity on the object and you feel as though your weight has reduced.

Pressure

Pressure is defined as the force per unit area. If a force F is applied on a surface of area A, then the pressure P is defined as:

P = \( \frac {F}{A}\)

As you blow up a balloon, it becomes harder to blow the balloon as it becomes bigger and bigger. This is because the air pressure inside the balloon is increasing. Pressure is expressed in N/m^{2} which is also called a Pascal (Pa).

In fluids this pressure is always perpendicular to the surface of an object. It is this pressure that is applied on an object submerged in water that forms the thrust force.

The pressure applied by the fluid is:

\( Pressure \)

Also,

\( 1~Pascal ~(Pa) \)

Or

\( Thrust \)

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