4.2 - Force Analysis
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Practice Questions
Test your understanding with targeted questions
Define mass conservation in your own words.
💡 Hint: Consider what happens to mass in closed versus open systems.
What is incompressible flow?
💡 Hint: Think about how water behaves under normal conditions.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the mass conservation principle state?
💡 Hint: Consider your understanding of closed versus open systems.
Is incompressible flow characterized by constant density?
💡 Hint: Relate it to how water behaves under pressure.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Given a flat plate is moving at 10 m/s into a water jet with a velocity of 25 m/s, if the water density is 1000 kg/m^3 and the jet area is 0.05 m^2, calculate the net force exerted on the plate considering the jet splits equally.
💡 Hint: Use momentum equations involving relative velocities.
A spacecraft with a mass of 10000 kg is dropping towards Earth at a speed of 600 m/s. If it expels gas with a rate of 50 kg/s at a speed of 2000 m/s, calculate the thrust produced and how much force counteracts gravity (approximation 98000 N).
💡 Hint: Incorporate mass flow rate with exhaust velocity in your calculations.
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