Simple Machines

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Across
  1. 2. A spirally grooved solid cylinder with an inclined plane wrapped around it
  2. 5. Has a bar that pivots on a fulcrum
  3. 6. Plane A flat surface raised at an angle
Down
  1. 1. Has two inclined planes put together
  2. 3. and Axle Has a trunk
  3. 4. Has a pulled rope over a wheel that changes the direction of the force