Practice Example Problems (3.3) - Lecture - 14: Conservation of Momentum: Example Problems

Practice: Example Problems

Lesson 3.3Lecture - 14: Conservation of Momentum: Example Problems

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9 questions

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6 sample questions

Question 1.
What is steady flow in fluid mechanics?
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Think about how changes in velocity would affect flow characteristics.
Question 2.
Define a control volume.
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Consider why we isolate a region to understand fluid behavior.
3Question 3.
What does the conservation of momentum state?
- Momentum is always increasing
- Total momentum remains constant
- Momentum can be created or destroyed
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Think about how momentum behaves in a closed system.
4Question 4.
True or False: Steady flow means that the fluid's pressure and velocity are constant over time.
- True
- False
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Focus on what 'steady' means in terms of time dependence.
Question 5.
A 2000 kg truck is moving at 20 m/s. It encounters a sudden obstacle causing a change in momentum due to an emergency stop. Calculate the required stopping force if it takes 5 seconds to stop.
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Remember that force relates to the rate of change of momentum.
Question 6.
A water tank has two exits with different velocities, flowing out. How would you calculate the net force acting on the tank due to these exits?
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Consider that pressure at the exits might affect your calculations.

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