Question regarding the differential height of mercury in a manometer

AI Thread Summary
The discussion revolves around calculating the differential height of mercury in a manometer based on given parameters, including flow rates and pipe dimensions. The velocities for two sections of the pipe were calculated as 0.7957 m/s and 3.183 m/s. The pressure difference between the two points was determined to be 6710.9 kg/ms. The final height of the mercury column was found to be 0.05 m. The conversation seeks clarification on the next steps after determining the height.
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Homework Statement
Water flows upward through an inclined pipe with a 20-cm diameter at a rate of 1.5 m^3/min. The diameter of the pipe is then reduced to 10-cm. The pressure difference between the two pipe sections is measured using a mercury manometer. The elevation difference between the two points on the pipe where the two arms of the mercury between the two points on the pipe where the two arms of the manometer are attached is 0.2-m. Neglecting frictional effects, determine the differential height of mercury between the two pipe sections.
Relevant Equations
Bernoulli Eq:##p_{1} + \frac{1}{2}Pv_{1}^{2} + Pgy_{1}=p_{2} + \frac{1}{2}Pv_{2}^{2} + Pgy_{2}##
Where P= Density and p= pressure
Continuity: ##A_{1}v_{1}=A_{1}v_{2}= Q##
Given:
##y_{2} - y_{1}= 0.2m##
##Q= 1.5\frac{m^{3}}{min}##
##Q= 0.025\frac{m^{3}}{s}## After conversion
##D_{1}= 0.2m## After conversion
##D_{2}= 0.1m## After conversion
##r_{1}= 0.1m##
##r_{2}= 0.05m##
##p_{1} - p_{2} = \frac{1}{2}P(v_{2}^{2}-v_{1}^{2}) + Pg(y_{2}-y_{1})##

Calculating Velocity using circular Area of the pipe
##v_{1}= \frac{Q}{A_{1}}##
##v_{2}= \frac{Q}{A_{2}}##
##A_{1}=0.03142m^{2}##
##A_{2}=0.007854m^{2}##
##v_{1}= 0.7957\frac{m}{s}##
##v_{2}= 3.183 \frac{m}{s}##

Inputting

##p_{1} - p_{2} = \frac{1}{2}(1000\frac{kg}{m^{3}})((3.183\frac{m}{s})^{2}-(0.7957\frac{m}{s})^{2}) + (1000\frac{kg}{m^{3}})(9.81\frac{m}{s^{2}})(0.2m)##
##p_{1} - p_{2} =6710.9\frac{kg}{ms}##

My question is where do I go from here to find the height?
 
Last edited:
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I found the height, and its 0.05m
 
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