How do machine help do work easier?

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Across
  1. 2. using force in order to move an object.
  2. 3. machine contains one or more simple machines among its parts.
  3. 5. machine a tool made up of one or two parts.
  4. 7. the support on a lever.
Down
  1. 1. the object that a lever carries.
  2. 4. any device that helps people do work easier.
  3. 6. force the applied force applied on the opposite side of a lever.