Evaluate Problems using fluid dynamics

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The discussion focuses on calculating the velocity of water exiting a nozzle with varying diameters and an exerted force on a flat plate. The participants clarify the interpretation of the force of 87N, which is exerted on the plate due to the momentum change of the water jet. They explore the application of Bernoulli's equation and continuity of flow but find challenges due to unknown pressures and velocities. Ultimately, a momentum balance approach is suggested, leading to a calculated exit velocity of approximately 11.1 m/s, which is deemed reasonable. The conversation emphasizes the importance of understanding fluid dynamics principles in solving such problems.
  • #31
akshay86 said:
but water also exert pressure on the plate contributing to the force
As I see it, the only force from the water acting on the plate is the force due to the water hitting the plate. The video in post #17 shows how to calculate this force.
 

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