Part A Here is a demonstration Pascal used to show the importance of a fluid\'s
ID: 1447170 • Letter: P
Question
Part A Here is a demonstration Pascal used to show the importance of a fluid's pressure on the fluid's depth(Figure 1): An oak barrel with a lid of area 0.25 m is filled with water. Along, thin tube of cross-sectional area 5.0x10' m is inserted into a hole at the center of the lid, and water is poured into the tube. When the water reaches 12 m high, the barrel bursts What was the weight of the water in the tube? Express your answer using two significant figures -5 m2 Figure 1 of 1 Submit My Answers Give Up Part B What was the pressure of the water on the lid of the barrel? Express your answer using two significant figures Submit My Answers Give UpExplanation / Answer
a)
the area of the tube A =5*10^-5 m2
let the density of water be p = 1000kg/m³ then the mass of water in the tube is
m = pV = p*A*L 1000*5*10^-5*12=0.6kg
C) net force on the lid due to the water pressure=?
the force of the water in the tube is mg
using m = p*At*L from above
the area of the lid is AR
let F be the force on the lid
the pressure at the end of the tube is equal to the pressure on the barrel lid
so ,P(lid) = P(tube)
and ,pressure = force / area
F/AR = mg/At
F=mg*AR/At
F=(0.6*9.8*0.25)/(5*10^-5)=29400 N
B)P(lid)=F/AR =29400/0.25 =1.17*10^5 Pa