Simple Machines

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Across
  1. 2. tools that make work easier
  2. 4. wheel that has a grooved track for the rope
  3. 5. inclinedplane wrapped around a shaft
  4. 6. lever balance point
  5. 8. simple machine used in a door knob
Down
  1. 1. simple machine used to break things apart by applying force
  2. 3. machine used to raise heavy objects
  3. 7. tool used to pry objects loose