Application of Bernoulli's Equation Physics question on FLUIDS unit

AI Thread Summary
To determine the total time needed to drain a root beer keg using Bernoulli's equation, the problem involves a keg with height H=2m and cross-sectional area A1=0.8m², with a spigot of area A2=10^-4 * A1. The velocity of the fluid exiting the spigot can be calculated using Torricelli's law, v = sqrt(2gh). By applying the mass flow rate and the relationship between the areas, the time to drain the keg can be derived. The discussion emphasizes the need for a clear approach to applying these principles to find the solution.
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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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Can you show us what you've tried and where you are stuck.

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

v = sqrt(2gh)

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