The document discusses the main parts of simple machines, including the lever, inclined plane, pulley, wheel and axle, wedge, and screw. It describes the three parts of a lever as the effort, load, and fulcrum. It also outlines the three basic types of levers and provides examples of each. Inclined planes, pulleys, wheels and axles, wedges, and screws are defined and some key parts or uses of each are mentioned.

1. PARTS OF SIMPLE
MACHINE

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 BASIC TYPES OF LEVER
FIRST CLASS LEVER
THE FULCRUM IS BETWEEN THE
LOAD AND THE FORCE
EX. SCISSOR, SEESAW


4. SECOND CLASS LEVER
THE LOAD LIES BETWEEN THE
FULCRUM AND THE APPLIED FORCE
EX. CAN OPENER AND WHEEL
BORROW


5. THIRD CLASS LEVER

THE EFFORT APPLIED IS BETWEEN
THE LOAD AND THE FULCRUM
EX. TWEEZERS AND SPADES

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. PULLEY
A GROOVED WHEEL WITH A ROPE
RIDING IN THE GROOVE . IT TURNS
ON AN AXLE


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. 
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. WHEEL AND AXLE
CONSIST OF 2 CONCENTRIC
WHEELS OF DIFFERENT SIZE.
THE SMALLER WHEEL IS THE AXLE
EX. DOORKNOB



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. 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
