Question

pressure vs thrust explain

Answer 1

Thrust (N) is a just a force which is used to propule the jet engines.

Pressure(N/mm2) always exist in a closed system. Eg ( pressure in car tyre, Pressre in a compressor tank, pressure in a balloon)

For simple Eg of thrust,

We take a balloon and blow it to its max size and stop blowing. Then you just leave the ballon and see wat happens, the ballon will start to fly due the high pressure air coming out from the small area (opening) with a high velocity that is wat thrust.

For simple Eg of pressure,

Let we take same eg balloon. When you blow the air into the balloon the air inside the balloon is compressed so it try to come out. At that time the air molecules hit the inside wall and try to come out. Now you take the hiting force acting in a particular area of the balloon that is wat the pressure, Force/area.

Answer 2

You may have noticed that when you submerge something in water it appears to weigh less. If you have gone swimming, you feel as though your weight has reduced. This is because any fluid applies an upward force on a body submerged in it. This force is called 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 is defined as the force per unit area. If a force F is applied on a surface of area 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/m2 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.