1.1. Variation of pressure with depth in a liquid

Try these first

1. 1.

   What happens to pressure as you go deeper in a liquid?

   Hint

   Think about the weight of water above you.

2. 2.

   Define Pascal's Law in your own words.

   Hint

   Consider how pressure is distributed in a closed container.

3. 3.

   What is the main reason pressure increases with depth in a liquid?

   • Less liquid above
   • More liquid above
   • Air pressure

   Hint

   Consider the weight of the fluid above.

4. 4.

   True or False: Pressure at a given depth in a static fluid varies with direction.

   • True
   • False

   Hint

   Think about Pascal's Law.

5. 5.

   A cylindrical tank filled with water has a height of 10 meters. Calculate the force exerted on the base of the tank if the diameter is 4 meters.

   Hint

   Apply pressure formulas to find force from pressure.

6. 6.

   If a submarine operates at a depth where the pressure is 3 MPa, calculate the depth if the density of seawater is 1025 kg/m³. Assume g = 9.81 m/s².

   Hint

   Rearrange the pressure equation to find depth.