machines

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Across
  1. 2. th lever needs me
  2. 6. has a fulcrum
  3. 7. the times the machine multiplies the input
  4. 8. helps us to do work every day
Down
  1. 1. stairs are an example of this machine
  2. 3. a door knob uses this machine
  3. 4. has a rope or cable
  4. 5. the comparison of input and out put