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MECHANISMS, image , image , image , image , image , image , image ,…

- - - - Constant system
      - Reducing system
      - Multiplying system
- - - - Class 2: resistance is between the fulcrum and effort applied.Effect of the effort applied is always multiplied
      - Class 3:effort applied is between the fulcrum. Effect of the effort applied is always reduced.
      - Class 1: fucrum is between the effort applied and the resistance.Effect of the effort applied can be multiplied or reduced
- - - - is a set of connecting rods attached to a jointed axle. Each of the
        points of the axle acts as a crank.
      - A crankshaft transforms the rotary motion of an axle into a
        reciprocating motion with different connecting rods
    - - rod has articulated Ioints at each end
      - As the wheel rotates, the crank transmits the rotary motton to the
        connecting rod
      - is composed of a crank and a rod called a connecting rod or link.
    - - We can change the shape and the usable profiles
      - A cern transforms rotary motion
        into reciprocating motion in the follower or bar
      - is a rotating object that pushes a follower as it moves
      - A set of cams fixed on the same axle is called a camshaft
    - - transforms the rotary motion of the
        wheel into reciprocating motion in the follower
      - This consists of a wheel with an off centre rotation axle
  - - - bolt or threaded bar and a nut that has the same
        intenor diameter as the diameter of the bolt.
    - - consists of a drum that rotates and acrank handle that allows to pull or lift obiects
      - F d= R . r -->F=R. Rxr/d
      - A crack is a bar attached to an axle that is used to turn it
      - F is the force applied and R, the resistance.
      - r is the radius of the winch and d, the length of the crank handle.
    - - L= PxZxN
      - L is the velocity of the rack's movement in millimetres per
        minute
      - uses a pinion that is a small cogwheel, mounted on a rack
      - P is the distance between two consecutive teeth in millimetres.
      - Z is the number of teeth in the pinion.
      - N is the number of rotations per minute of the pinion