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mechanisms - Coggle Diagram

- - - - N1 and N4 are the respective velocities of the drive and driven
        pulleys.
      - D1, D2, D3 and D4 are the diameters of each wheel.
    - - Multiplying system
        
        velooty is increased
      - Constant system
        
        velocity remains constant
      - Reducing system
        
        velocity is reduced
- - - - R i s the resistance or load which acts at the other end of the bar.
      - d is the distance from F to the fulcrum
      - F is the force or effort applied at one end of the bar.
      - r is the distance from R to the fulcrum
    - - Class 2
        
        The resisntace is between the fulcrum ant the effort applied
        
        The effect of the effort applied is always multipled(d>r)
      - Class 3
        
        the effort applied is between the fulcrum and the resistance
        
        The effect of the effort applied is always reduced(d<r)
      - Class 1
        
        The fulcrum is between the effort applied and the resistance
        
        The efect of the effort applied can be multiplied or reduced