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Parts of simple machine

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science 5

Publié dans : Technologie, Business
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Parts of simple machine

  1. 1. PARTS OF SIMPLE MACHINE
  2. 2. LEVER THE THREE PARTS OF A LEVER ARE EFFORT, LOAD, AND FULCRUM. EFFORT – THE FORCE APPLIED LOAD – THE WEIGHT PLACED ON THE OPPOSITE SIDE FULCRUM – A FIXED POINT IN WHICH A LEVER TURNS. 
  3. 3. 3 BASIC TYPES OF LEVER FIRST CLASS LEVER THE FULCRUM IS BETWEEN THE LOAD AND THE FORCE EX. SCISSOR, SEESAW 
  4. 4. SECOND CLASS LEVER THE LOAD LIES BETWEEN THE FULCRUM AND THE APPLIED FORCE EX. CAN OPENER AND WHEEL BORROW 
  5. 5. THIRD CLASS LEVER  THE EFFORT APPLIED IS BETWEEN THE LOAD AND THE FULCRUM EX. TWEEZERS AND SPADES
  6. 6. INCLINED PLANE AN INCLINED PLANE IS CONSIST OF AN INCLINED TRACK OR RAMP.  IT HAS A FLAT SURFACE WITH ONE END HIGHER THAN THE OTHER.  EX. STAIRCASE 
  7. 7. PULLEY A GROOVED WHEEL WITH A ROPE RIDING IN THE GROOVE . IT TURNS ON AN AXLE 
  8. 8. 3 TYPES OF PULLEY FIXED PULLEY – COMPOSED OF GROOVED WHEEL ON A FIXED AXLE.  MOVABLE PULLEY – THE LOAD IS ATTACHED TO THE AXLE OF THIS PULLEY. 
  9. 9.  BLOCK AND TACKLE – THE PULLEYS ARE MOUNTED IN FRAMES CALLED BLOCKS. EACH BLOCK HAS A HOOK BY WHICH IT WAS FASTENED TO SUPPORT OR TO THE LOAD.
  10. 10. WHEEL AND AXLE CONSIST OF 2 CONCENTRIC WHEELS OF DIFFERENT SIZE. THE SMALLER WHEEL IS THE AXLE EX. DOORKNOB  
  11. 11. WEDGE A WEDGE IS A DEVICE THAT HAS TWO OR MORE SLOPING SURFACES THAT TAPER EITHER TO A SHARP EDGE OR TO A POINT. 
  12. 12. SCREW A SCREW HAS 2 MAIN PARTS  THE BODY AND THE THREAD  THE CENTER LINE OF THE BODY IS CALLED THE AXIS  THE DISTANCE BETWEEN TWO ADJACENT CREST OF THE THREAD IS KNOWN AS THE PITCH 

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