7.3.1. Pressure Variations in Fluid at Rest

Try these first

1. 1.

   What is hydrostatics?

   Hint

   Think about fluids that are not moving.

2. 2.

   What does Pascal's law describe?

   Hint

   Consider a water-filled balloon?

3. 3.

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

   • It decreases
   • It stays the same
   • It increases

   Hint

   Think about being underwater.

4. 4.

   True or False: Pascal's Law states that pressure can change when exerted on a fluid.

   • True
   • False

   Hint

   Consider how a pressurized bottle works.

5. 5.

   A vertical dam holds water to a height of 20 meters. Calculate the force exerted by the water on the dam wall of area 10 m².

   Hint

   Use hydrostatic pressure equations and keep in mind area of the dam wall.

6. 6.

   A hydraulic lift compresses liquid creating a 10 times greater output force than the input. If you apply a force of 100 N, what is the output force?

   Hint

   Remember how pressure is transmitted in a confined fluid.