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Simple Machines
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Simple Machines

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Transcript

  • 1. Simple Machines
    • A machine with few or no moving parts.
    • Knife, door knob, ramp, saw, screw driver, drill, teeter totter, slide, ladder, and many more.
  • 2. Six Simple Machines
    • Lever
    • Pulley
    • Wheel and Axle
    • Incline Plane
    • Wedge
    • Screw
  • 3. Lever
    • A lever is a board on a fixed point. Levers have three main parts; a fulcrum, load, and force. A teeter totter is a lever.
    load fulcrum force
  • 4. Pulley
    • A pulley is a simple machine that uses a wheel with a groove and a rope. Flag poles have pulleys. Curtains and blinds use pulleys. Construction cranes also have pulleys.
    pulley
  • 5. Wheel and Axle
    • A wheel and axle is a wheel that turns on a post. A door knob, pencil sharpener, and roller skates have wheels and axles.
    Door knob is a wheel and axle
  • 6. Inclined Plane
    • An inclined plane is an object that is raised on one end. A ramp, door stop, hill, and slide are inclined planes.
    Inclined plane
  • 7. Wedge
    • Two inclined planes placed back to back. An ax, knife, and nail are wedges.
    wedge
  • 8. Screw
    • An inclined plane wrapped into a spiral.
    screw
  • 9. Compound Machine
    • Two or more simple machines used together. A pair of scissors has a wedge and a lever.

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