Physics

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Across
  1. 3. a rigid bar resting on a pivot used to move a heavy or firmly fixed load with one end when pressure is applied to the other
  2. 5. the SI unit of pressure, equal to one newton per square metre
  3. 6. process where the velocity changes
  4. 7. the point against which a lever is placed to get a purchase, or on which it turns or is supported.
Down
  1. 1. denoting or relating to a liquid moving in a confined space under pressure
  2. 2. substance is its mass per unit volume
  3. 4. unit of pressure equal to the air pressure at sea level