Chapter 14 Vocab

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  1. Grooved wheel with a rope or cable wrapped over it.
    • Pulley
  2. two circular objects of different sizes that are attached in such a way that they rotate together
    • Wheel and Axle
  3. any rigid rod or plank that pivots, or rotates, about a point.
    • Lever
  4. an inclined plane wrapped around a cylinder or post.
    • Screw
  5. an inclined plane that moves
    • Wedge
  6. a flat, sloped surface
    • inclined plane
  7. a combination of simple machines
    • Compound Machine
  8. a machine that works with only one movement
    Simple Machine
  9. the ratio of the output work to the input work. calculated from this equation
    Workout divided by Workin x 100%
    Efficiency (eff)
  10. The ratio of the output force to the input force
    Calculated by:
    Force(out) divided by Force(in)
    Mechanical Advantage (MA)
  11. the force the machine applies
    Output Force
  12. the work you apply on the machine
    Input Force
  13. how quickly work is done can be calculated by:

    (in joules) divided by time (in seconds)

    and is measured in WATTS
  14. Done when a force causes an object to move in the same direction that the force is applied. It is measured in joules
    Can be calculated as:

    force (in newtons) X Distance (in meters)

Card Set Information

Chapter 14 Vocab
2011-10-10 19:01:46
adamharper sci

Forces and Simple Machine
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