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Mechanisms (Rotary motion mechanisms (These mechanisms transmit and effort…

- - - - A lever is a rigid bar that is supported by a fulcrum
      - F is the force or effort appbed at one end of the ba
      - R i s the resistance or load which acts at the other end of the bar.
      - d i s the distance from F to the fulcrum
      - r is the distance from R to the fulcrum
      - There are three types of levers, Class 1, Class 2 and Class 3
    - - mobile pulleys
        
        A moveable pulley ts a set of two pulleys — one ts fixed while the other can move in a linear direction
      - compound pulleys
      - fixed pulleys
        
        A fixed pulley is a wheel that has a groove around lt into which a rope, cham or belt fits