Forces and Friction

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  • Created by: Olivia
  • Created on: 27-04-13 15:06

A force is simply a push or a pull

  • Gravity or Weight always acting straight downwards
  • Reaction force from a surface, usually acting upwards
  • Electrostatic force between two charged objects. the direction depends on the type of the charge (liek charges repel, opposite charges attract)
  • Thrust or push or pull due to an engine or rocket speeding something up
  • Drag or air resistance of friction which is slowing the thing down
  • Lift due to an aeroplane wing
  • Tension in a rope or cable

You can draw the forces acting on a body

  • Chances are, there are loads of forces acting on you right now, that you dont even know about. You don't notice them because they all balance out
  • Any object with a weight feels a reaction force back from the surface it's on. Otherwise it would just keep falling
  • When an object moves in a fluid (air water etc).it…


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