Si   m   ple Machine   !
Levers
Pulley System
Inclined Plane
 Wheel & Axle
     Gears
Levers !
First Class Lever
Fulcrum = Pivoting Point   Effort




       Fulcrum
Load
Effort 30g




Load 100g
Effort



Load
First Class Lever
    (Examples)
    Scissors
     Pliers
    See-saw
    Crowbar
Second Class Lever !!
Effort
                                 30g


          Load

                 100g
Fulcrum
Effort
                                 30g


          Load

                 100g
Fulcrum
Second Class Lever
    (Examples)

   Wheelbarrow
    Nutcracker
 Bottle cap opener
Third Class Lever !!
Fulcrum


  Effort




       Load
Fulcrum



 Effort
 300g



      Load
      100g
Greater Effort!
     Faster Speed!




Fulcrum



 Effort
 300g



      Load
      100g
Third Class Lever
    (Example)

      Broom
   Fishing rod
     Ice tong
Pulley !
Fixed Pulley System !
Effort and
                 load move
                in opposite
                  direction.
Load

       Effort
Effort
                 needed
                  equals
                the Load
                   if no
                ...
Effort and
                        load travel
                           equal
                         distance.
5 cm
  ...
Advantage;
                 Changes
                    the
                direction of
                an applied
Load  ...
Movable Pulley System !
Effort




                  Effort
                and load
                 move in
                  same
Load         ...
Effort




               Effort
              travels
            twice the
             distance
Load        compared
  ...
Effort
        60g


                  Effort
                needed is
                less than
                the load...
Effort
                  Allows a
                  smaller
                  effort to
                overcome a
       ...
Pulley System !!
Effort
          and load
           move in
          opposite
          direction.
       Effort

Load
Effort
             travels
             greater
            distance
           compared
          to the load.
       Ef...
Effort
                needed is
                less than
                the load.


       Effort
        50g
Load
100g
Pulley System
                  Advantage 1
                 Allows a smaller
                force to overcome
          ...
Inclined Plane !!
Effort = 70g   Effort = 60g
                 Load needs     Load needs
                 to travel      to travel even
Effo...
Examples of Inclined Plane

        staircase
  sharp point of needle
 sharp point of iron nail
sharp end of an axe/knife
Wheel & Axle !!
Wheel & Axle
                 Wheel




       Axle




          Load
                 Effort
Effort & load moves in opposite
direction.



            Axle

                              Wheel




     Load         ...
A smaller effort is needed to lift the load.




            Axle

                                Wheel




     Load    ...
Effort travels a greater distance than the load.




                Axle

                                   Wheel




  ...
Examples of Wheel & Axle

    door handle/ knob
       screw driver
    bicycle handle-bar
      steering wheel
Gears !!!
Gear is
  a
wheel
 with
 teeth
Gear can
 rotate
clockwise.
Gear can
 rotate
   anti-
clockwise.
Inter-locking gears.




Changes the direction of an inter-
         locking gear.
16 teeth             Inter-locking gears.

              8 teeth




  Changes the speed of a smaller
inter-locking gear w...
Two gears joined by a chain.


        A                   B




Gear A & B move in SAME direction.
Gear B moves at faster...
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P6 Fsci Simple Machine1

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P6 Fsci Simple Machine1

  1. 1. Si m ple Machine !
  2. 2. Levers Pulley System Inclined Plane Wheel & Axle Gears
  3. 3. Levers !
  4. 4. First Class Lever
  5. 5. Fulcrum = Pivoting Point Effort Fulcrum Load
  6. 6. Effort 30g Load 100g
  7. 7. Effort Load
  8. 8. First Class Lever (Examples) Scissors Pliers See-saw Crowbar
  9. 9. Second Class Lever !!
  10. 10. Effort 30g Load 100g Fulcrum
  11. 11. Effort 30g Load 100g Fulcrum
  12. 12. Second Class Lever (Examples) Wheelbarrow Nutcracker Bottle cap opener
  13. 13. Third Class Lever !!
  14. 14. Fulcrum Effort Load
  15. 15. Fulcrum Effort 300g Load 100g
  16. 16. Greater Effort! Faster Speed! Fulcrum Effort 300g Load 100g
  17. 17. Third Class Lever (Example) Broom Fishing rod Ice tong
  18. 18. Pulley !
  19. 19. Fixed Pulley System !
  20. 20. Effort and load move in opposite direction. Load Effort
  21. 21. Effort needed equals the Load if no friction. Effort needed greater than Load, to Load overcome 100g friction. Effort 100g ? 120g ?
  22. 22. Effort and load travel equal distance. 5 cm 5 cm Load Effort
  23. 23. Advantage; Changes the direction of an applied Load force. Effort
  24. 24. Movable Pulley System !
  25. 25. Effort Effort and load move in same Load direction.
  26. 26. Effort Effort travels twice the distance Load compared to the load.
  27. 27. Effort 60g Effort needed is less than the load. Load 100g
  28. 28. Effort Allows a smaller effort to overcome a greater load. Load
  29. 29. Pulley System !!
  30. 30. Effort and load move in opposite direction. Effort Load
  31. 31. Effort travels greater distance compared to the load. Effort Load
  32. 32. Effort needed is less than the load. Effort 50g Load 100g
  33. 33. Pulley System Advantage 1 Allows a smaller force to overcome a greater load. Advantage 2 Effort Changes the 50g direction of an Load 100g applied force.
  34. 34. Inclined Plane !!
  35. 35. Effort = 70g Effort = 60g Load needs Load needs to travel to travel even Effort = 100g longer longer distance. distance. Load = 100g
  36. 36. Examples of Inclined Plane staircase sharp point of needle sharp point of iron nail sharp end of an axe/knife
  37. 37. Wheel & Axle !!
  38. 38. Wheel & Axle Wheel Axle Load Effort
  39. 39. Effort & load moves in opposite direction. Axle Wheel Load Effort
  40. 40. A smaller effort is needed to lift the load. Axle Wheel Load Effort
  41. 41. Effort travels a greater distance than the load. Axle Wheel Load Effort
  42. 42. Examples of Wheel & Axle door handle/ knob screw driver bicycle handle-bar steering wheel
  43. 43. Gears !!!
  44. 44. Gear is a wheel with teeth
  45. 45. Gear can rotate clockwise.
  46. 46. Gear can rotate anti- clockwise.
  47. 47. Inter-locking gears. Changes the direction of an inter- locking gear.
  48. 48. 16 teeth Inter-locking gears. 8 teeth Changes the speed of a smaller inter-locking gear with fewer teeth.
  49. 49. Two gears joined by a chain. A B Gear A & B move in SAME direction. Gear B moves at faster speed than Gear A

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