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Mechanisms, image , image , image , image , image - Coggle Diagram

- - - - The ratio between the rotation velocity of the wheels or pulleys depends on the relative size of the wheels.
  - - - Their axles are parallel and they rotate simultaneously due to the effect
        of the belt.
  - - - The cogs fit into the spaces between the cogs of another wheel, so that one wheel moves the other.
  - - - Each time the screw rotates, the gear moves forward as many teeth as there are grooves in the screw, usually a small number: I, 2 or 3
  - - - The chain transmits the rotary motion of axle 1 to axle 2 by means of gears I and 2, and the two gears rotate in the same direction.
  - - - The rotary motion of the first wheel (1) drives the second wheel (2), and so on.
- - - - Transmitting motion
        
        Linear
        
        Rotary
      - Transformating motion
        
        Rotary to linear
        
        Rotary to reciprocating
      - Controlling and regulating motion
        
        Joining elements
        
        Storing energy
- - - - A fixed pulley is balanced when the effort F is equal to the resistance of the load, R. F = R
  - - - A moveable pulley is balanced when it satisfies this equation. F = R/2
  - - - If we use more pulleys, the system becomes more complex, but less effort is needed to move the load.
- - - - Disk brakes
      - Band brakes
      - Drum brakes
  - - - By compression
      - By traction
      - By torsion
- - - - This uses a pinion that is a small cogwheel, mounted on a rack that is a toothed belt or bar
    - - This consists of a bolt or threaded bar and a nut that has the same intenor diameter as the diameter of the bolt.
    - - A crank is a bar attached to an axle that is used to turn it
  - - - This is composed of a crank and a rod called a connecting rod or link.
    - - This is a set of connecting rods attached to a jointed axle. Each of the joints of the axle acts as a crank.