Simple Machines

12345678910
Across
  1. 4. ratio of force by a machine
  2. 6. measures efficiency of machines
  3. 8. uses a wheel and rope
  4. 10. used to left or move an object
Down
  1. 1. spinning thingy
  2. 2. measured in watts
  3. 3. attaches to pieces of wood
  4. 5. object at an angle or slant
  5. 7. object forced between 2 objects
  6. 9. measured in joules