Practice Net Force On Element (3.6) - Viscous Fluid Flow (Contd.) - Hydraulic Engineering - Vol 3

Practice: Net Force on Element

Lesson 3.6Viscous Fluid Flow (Contd.)

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8 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define body force and give an example.
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Consider forces acting on the volume of the fluid.
Question 2.
What is a surface force?
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Think about forces acting on the boundaries of a fluid.
3Question 3.
What are body forces in fluid mechanics?
- Forces applied to fluid surfaces
- Forces acting on the entire mass of the fluid
- Forces due to pressure
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Think about how gravity affects all parts of a fluid.
4Question 4.
True or False: Surface forces are always greater than body forces.
- True
- False
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Consider a fluid in a gravitational field.
Question 5.
A fluid element is subjected to body forces of 10 N and surface forces quantified through a stress tensor that shows varying stresses on its surfaces. If you calculate the net force, how do these forces combine?
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Use vector addition to find the net force.
Question 6.
Analyze how changing the density of a fluid affects the body forces acting on a fluid element submerged in a gravitational field.
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Consider the relationship between mass and gravitational force.

4 more questions in this section. Enroll free to practise them all.