Simple Machines

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Across
  1. 3. a beam that pivots on a fulcrum
  2. 5. actual mechanical advantage
  3. 7. transfer of energy through motion
  4. 8. a slanted surfce
  5. 9. the amount of different classes of levers
Down
  1. 1. a rope wrapped around a grooved wheel
  2. 2. two different-sized wheels that rotate together
  3. 4. an incline plane that turns around a central point
  4. 6. ideal mechanical advantage
  5. 7. an incline plane with two sloping sides