Machines

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Across
  1. 6. A sloped surface that moves
  2. 7. The point about which a lever pivots
  3. 9. an axle attached to the center of a wheel and both rotate together
  4. 10. the ratio of the output work to the input work
  5. 11. the unit for work
  6. 12. the ratio of a machine's output force produced to the input force applied
  7. 13. An inclined plane wrapped around a cylinder
Down
  1. 1. lever, wheel and axle, inclined plane, wedge, screw, and pulley
  2. 2. a flat, sloped surface
  3. 3. transfer of energy when a force is applied over a distance(FxD=W)
  4. 4. a simple machine made up of a bar that pivots, or rotates, about a fixed point.
  5. 5. a simple machine that is a grooved wheel with a rope or cable wrapped around it.
  6. 8. the rate at which work is done