20.5.1 - External Forces in Linear Momentum
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Practice Questions
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What is linear momentum?
💡 Hint: Think about the definition of momentum in physics.
Define a control volume.
💡 Hint: Consider how we isolate a system to analyze forces.
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Interactive Quizzes
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What is the principle of linear momentum conservation?
💡 Hint: Think about how momentum behaves in an isolated system.
True or False: Surface forces can include gravitational effects.
💡 Hint: Consider the nature of the forces.
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Challenge Problems
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Consider a cylindrical tank with inflow and outflow pipes. If the fluid enters the tank at a rate of 5 m³/s and exits at 4 m³/s, calculate the net momentum change in the control volume if the fluid density is 1000 kg/m³.
💡 Hint: Focus on the flow rates and how they relate to momentum.
Given a 3D flow simulation around a rectangular structure, determine the forces acting on the structure if the pressure distribution is non-uniform. Describe how you would set up your computational model.
💡 Hint: Consider how pressure changes affect forces overall.
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