Application of Bernoulli's Equation Physics question on FLUIDS unit

In summary, a large root beer keg with a height of 2m and cross sectional area of 0.8m^2 is filled with root beer. The top is open to atmospheric pressure and the bottom has a spigot opening of 10^-4 times the area of the top. Using Torricelli's law of fluids, the total time needed to drain the keg can be found by calculating the mass flow rate.
  • #1
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A large root beer keg of height H and cross sectional area A1 is filled with root beer. The top is open to atmospheric pressure. At the bottom is a spigot opening of area A2, which is much smaller than A1.
Find the total time needed to drain the keg if H=2m, A1=.8m^2 and A2=10^-4 * A1.
 
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  • #2
Can you show us what you've tried and where you are stuck.

https://www.physicsforums.com/showthread.php?t=94379
 
  • #3
u can use toricellis' law of fluids

v = sqrt(2gh)

you can then take the mass flow rate to find the time right
 

Related to Application of Bernoulli's Equation Physics question on FLUIDS unit

1. What is Bernoulli's Equation and why is it important in fluid dynamics?

Bernoulli's Equation is a fundamental principle in fluid dynamics that describes the relationship between pressure, velocity, and elevation in a moving fluid. It states that as the velocity of a fluid increases, its pressure decreases and vice versa. This equation is important because it helps us understand and predict the behavior of fluids in various applications, such as in airplanes, ships, and pipelines.

2. How is Bernoulli's Equation derived?

Bernoulli's Equation is derived from the principles of conservation of energy and mass in a closed system. It assumes that the fluid is incompressible, non-viscous, and flows steadily along a streamline. By applying these principles and using mathematical equations, we can derive the equation to describe the relationship between pressure, velocity, and elevation in a fluid.

3. Can Bernoulli's Equation be applied to all types of fluids?

Bernoulli's Equation can be applied to most fluids, as long as they are incompressible and non-viscous. However, it may not accurately describe the behavior of highly viscous or compressible fluids, such as honey or air at high speeds. In these cases, modifications to the equation may be necessary.

4. How is Bernoulli's Equation used in real-world applications?

Bernoulli's Equation has various practical applications, including in aerodynamics, hydrodynamics, and fluid flow measurement. For example, it is used to explain the lift force on airplane wings, the flow of water through pipes, and the operation of carburetors in cars.

5. What are the limitations of Bernoulli's Equation?

Bernoulli's Equation has some limitations, such as assuming ideal conditions and neglecting the effects of viscosity. It also does not take into account changes in temperature and density of the fluid. Additionally, it can only be applied to steady and laminar flow, not turbulent flow. Therefore, it is important to use caution when applying this equation and consider the limitations for accurate results.

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