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Forces and Pressure - Coggle Diagram

- - - - A push or pull acting on an object
  - - - What?
        
        A force that results when two interacting objects are in direct contact with each other
      - E.g. frictional force
    - - What?
        
        A force applied to an object by another object that is not in direct contact with it
      - E.g. Gravitational force, Magnetic force
- - - - Friction between the sole of the shoes and the surface of roads allow us to
        
        walk
        
        without slipping/sliding
        
        stand
        
        run
    - - Helps a pencil to make a mark on papers
      - Enables an eraser to remove the mistake
    - - Enables iron nails to hold objects together
    - - Friction between the brakes and wheels allows a vehicle to slow down/ stop when necesssary
      - Door stopper prevents door from closing
    - - Friction between the wheels and soil allows a vehicle to move across a muddy field
  - - - Causes shoes, tyres, moving parts in machines/other objects that are used for moving to become worn out
    - - Produces heat which results in wastage of energy
      - Uses more energy to move an object as friction opposes motion
  - - - Makes a surface smoother
        
        Object can move across the surface with less friction
        
        Doesn't wear out so quickly
    - - Ball bearings
        
        Allow the wheels to turn on the axle easily
        
        Reduces wastage of energy
      - Rollers
        
        transport heavy objects easily
      - Wheels
        
        Fitted over heavy objects such as refrigerators, shelves or machines so that they can be moved easily
    - - Reduces the direct contact between 2 surfaces
        
        Makes the objects 'float' above the surface so that they can travel at high speeds