Pressure

Pressure

1. Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed

2. Pressure= Thrust ________ area

3. Unit= Nm-²

4. THRUST

   • A force acting normally on a surface is called thrust
     • vector quantity
   • Unit= S.I- N C.G.S-dyne

5. PRESSURE IN GASES

   • The pressure of a gas is the force that the gasexerts on the walls of its container

6. PRESSURE IN FLUIDS

   • The pressure exerted by a static fluid depends only upon the depth of the fluid, the density of the fluid, and the acceleration of gravity

7. PRESSURE IN SOLIDS

   • the pressure a solid object exerts on another solid surface is its weight in newtons divided by its area in square metres

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