Machines Crossword

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Across
  1. 4. a simple machine that has a bar that pivots at a fixed point
  2. 5. the fixed point of a lever
  3. 8. a simple machine that is a straight, slanted surface
Down
  1. 1. the number of times the machine multiplies the input force
  2. 2. a simple machine that is made of a wheel connected to a smaller cylindrical obkect
  3. 3. the comparison of a machine's work output with the work input
  4. 6. any device that helps people do work by changing the way work is done
  5. 7. a simple machine that has a grooved wheel that holds a rope or cable