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Inclined Planes Screws Wedges

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Inclined Planes Screws Wedges

  1. 1. Inclined Planes Screws Wedges
  2. 2. What is an inclined plane? <ul><li>An inclined plane is a form of simple machine that consists of a slanted surface along which objects are easier to push upward that to lift straight up. </li></ul><ul><li>A ramp and stairs are both examples of inclined planes. </li></ul>
  3. 3. Length and Height of Inclined Planes <ul><li>It is easier to move an object up a more sloping (longer in length) inclined plane than it is to move the same object up a steeper (shorter in length) inclined plane. </li></ul><ul><li>Example: It would be easier to ride a bike up a longer but shorter hill. </li></ul>Sloping Hill Steep Hill
  4. 4. Why do you use an inclined plane? <ul><li>Incline planes reduce the effort needed to carry something over a long distance or to raise something to a higher level. </li></ul>
  5. 5. Examples of Inclined Planes
  6. 6. More Examples of Inclined Planes
  7. 7. What is a screw? <ul><li>A screw is a simple machine consisting of a pole or rod with an inclined plane wrapped around it. </li></ul><ul><li>Screws are used for holding things together (wood screws), drilling holes in things (drills), and lifting things (car jacks). </li></ul>
  8. 9. Common Examples of Screws
  9. 10. What is a wedge? <ul><li>A wedge is another version of the inclined plane. Usually it is thought of as two inclined planes put back to back. </li></ul><ul><li>Wedges help us cut things, chop things, and split things apart. They are also used to hold things in place. </li></ul><ul><li>Axes, knives, and scissors are all wedges. </li></ul>
  10. 11. Common Examples of Wedges
  11. 12. Inclined Plane, Wedge, or Screw?
  12. 13. Name the Simple Machines Used

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