Pressure

• Pressure


  The force per unit of area
• Fluid pressure


  Pressure created by the collisions of particles (in liquids and gases) with their surroundings
• Pressure is always measured using the perpendicular force component
• Particle striking a surface perpendicularly


  Entire force used to generate pressure
• Particle striking a surface at an angle

  Only a small perpendicular force component used to generate pressure
• Calculating perpendicular force from pressure and area

  Perpendicular force = Pressure x Area