Simple machines

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Across
  1. 4. this simple machine is used in lifts
  2. 5. It is in the center in a second class lever
  3. 6. It is the fixed point around which effort and load work
Down
  1. 1. The axe used to cut trees is an example of this type of simple machine
  2. 2. It is an inclined plane used in hospitals.
  3. 3. It is a gentle slope which help us to carry heavy load
  4. 6. Sea-saw. a balance and a pair pf scissors are which class of lever?