Simple Machines

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Across
  1. 1. a first class lever used to cut
  2. 2. number of types of pulleys
  3. 4. the type of pulley which contains movable and fixed pulleys in it
  4. 7. A large wheel and axel in London (don't put spaces)
  5. 8. a seesaw is an example of this (don't put spaces)
Down
  1. 1. a nutcracker is this class of lever (don't put spaces)
  2. 3. one of the simplest inclined plane seen in hospitals and schools which make it easier for wheelchairs to climb up.
  3. 5. force needed to be added to move a lever
  4. 6. a common wedge seen in many places