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pressure:pressure [2016/05/20 14:11]
sykesn
pressure:pressure [2016/05/20 14:21] (current)
sykesn
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                                              ====== Pressure ======                                              ====== Pressure ======
  
-18.+18. Pressure + force ÷ area 
  
-19.+19.The correct units of pressure are N/m2 or N/cm2.
  
-20.+20.There is only one formula you need in pneumatics - that for calculating the force output from a cylinder. You will be given the formula sheet at the front of your GCSE answer book. So all you have to do is make sure you know how to use it! 
 +The force you get out of a cylinder depends on the air pressure inside it, and the size or area of the piston. The formula is: 
 +Force (F) = pressure (p) × area (a)
  
-21. 
  
-22.+21.I can describe an experiment to show that pressure in liquids increases with depth 
 + 
 +22.Liquids are made up of very small particles, when you go deeper into the water the density builds because the number of particles builds up above you. These particles are constantly moving around in rapid motion and they slide past each other, this is why a liquid is constantly rippling.  
 +E.G. When water is placed into a glass with three holes in it and there is one above each other. The hole in the bottom will have the most water force coming out of it because there are more particles forcing their way to get out of the glass and the density at the bottom is more high because there are more particles in that area. 
  
 23.Liquids are used in a hydraulics system because: 23.Liquids are used in a hydraulics system because:
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 32.If the moment is unbalanced, the lever will move. The resultant is which direction it will move in. 32.If the moment is unbalanced, the lever will move. The resultant is which direction it will move in.
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 33.• If the moments are equal and opposite they will cancel. 33.• If the moments are equal and opposite they will cancel.
pressure/pressure.txt · Last modified: 2016/05/20 14:21 by sykesn