1.7. Pascal's law: Pressure variation with direction

Try these first

1. 1.

   What happens to pressure as you dive deeper into water?

   Hint

   Think of what is above you when you go deeper.

2. 2.

   What is Pascal's law?

   Hint

   Consider how pressure is applied in a liquid.

3. 3.

   What is the relationship between pressure and depth in fluids?

   • Pressure decreases with depth
   • Pressure increases with depth
   • Pressure remains constant

   Hint

   Think of what happens when you dive deeper.

4. 4.

   True or False: Pressure in a fluid acts in a horizontal direction.

   • True
   • False

   Hint

   Consider the direction in which pressure is applied.

5. 5.

   A diver descends 30 meters in water. Calculate the increase in pressure they experience compared to the surface. (Use ρ = 1000 kg/m³ and g = 9.81 m/s².)

   Hint

   Remember to use the formula P = ρgh for calculating pressure change.

6. 6.

   Discuss the design considerations for a dam based on the variation of pressure with depth. Provide examples of how pressure influences structural choices.

   Hint

   Consider what happens to structures under various loads and the reasons for safety factors.