1.1. Fluid Properties

Try these first

1. 1.

   What is the definition of viscosity?

   Hint

   Think about what happens when a fluid moves.

2. 2.

   List the three primary dimensions used in fluid mechanics.

   Hint

   Recall the fundamental units of measurement.

3. 3.

   What does viscosity measure in a fluid?

   • A. Thickness of a fluid
   • B. Temperature of a fluid
   • C. Density of a fluid

   Hint

   Think about fluid movement.

4. 4.

   True or False: Kinematic viscosity is the ratio of dynamic viscosity to density.

   • True
   • False

   Hint

   Recall the relationship between these two types of viscosity.

5. 5.

   Calculate the terminal velocity of a sphere of diameter 1 cm and density 1200 kg/m³ falling through a fluid with dynamic viscosity of 0.5 Pa·s. Use Stokes' law.

   Hint

   Remember to consider the density of the fluid in your calculations.

6. 6.

   In a viscosity experiment, determine how power relates to viscosity in a system with two rotating plates. Given force and area, derive the relationship.

   Hint

   Use the definitions of shear stress and viscosity in your derivation.