20.. Fluid Mechanics for Civil and Mechanical Engineering

Try these first

1. 1.

   What is conservation of momentum?

   Hint

   Think about the implications of no outside forces.

2. 2.

   What does a control volume represent?

   Hint

   It helps visualize where fluids enter and exit.

3. 3.

   What does the conservation of momentum state?

   • Momentum increases over time
   • Momentum decreases without constraint
   • Total momentum remains constant in a closed system

   Hint

   Consider a ball rolling on a smooth surface.

4. 4.

   True or False: Body forces only act on the surface of fluids.

   • True
   • False

   Hint

   Think about gravitational forces operating in fluids.

5. 5.

   Given a pipe with a variable diameter, analyze how conservation of momentum applies as fluid flows through both wider and narrower sections.

   Hint

   Utilize the equation of continuity: A1V1 = A2V2.

6. 6.

   Discuss how external environmental forces, like wind, may affect the momentum equations applied in analyzing the flow of water around a dam.

   Hint

   What happens to the flow when wind applies a force?