SIMPLE MACHINES

1
SIMPLE MACHINES

• LEVERS AND PULLEYS

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THE SIX SIMPLE MACHINES

• There are six simple machines. There are inclined
  planes, wedges, pulleys, levers, screws and wheel
  and axles.

3

• All of the simple machines make work in science
  easier. When they make work easier they are
  really cutting your effort force.

4
Simple Machines

• There are six simple machines,but they all do the
  same thing, they all make work easier.

5

LOAD OR RESISTANCE

• It is the weight of the object we want to move.

6
EFFORT FORCE

• Effort Force is the force applied to move the
  object you are trying to move.

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Work

• Work is when you physically move an object over a
  distance.

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LEVER PARTS

• The six lever parts are Fulcrum,Lever Arm,
  Resistance/Load and Effort Force. All of these
  parts make a lever.

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• The best way possible to set up a lever is to put
  the load/resistance as close to the fulcrum as
  possible on one side, then use the effort force
  on the other end of the lever.

10
PULLEY PARTS

• The four pulley parts are Effort Force,Pulley
  Wheel,Resistance/Load and Supporting Lines/ropes.

11

• When you add supporting lines the effort force is
  cut. For example, if you have five supporting
  lines it cuts your effort force by 1/5.

12

• The supporting lines affect the distance your
  hands move compared to the load. For example,
  when you have five feet of supporting lines and
  you pull the whole five feet the load will only
  move one foot.