See applicationsOfIntegration/digInPhysicalApplications.tex
In the "Work done by a constant force on a collection of particles" section, the textbook shows the calculation for ρgA is 98,000π.
Note that ρ=1000kg/m^3, g=9.8m/s^2, and A=100π
If i'm not mistaken, 1000 * 9.8 * 100pi = 980,000π
See applicationsOfIntegration/digInPhysicalApplications.tex
In the "Work done by a constant force on a collection of particles" section, the textbook shows the calculation for ρgA is 98,000π.
Note that ρ=1000kg/m^3, g=9.8m/s^2, and A=100π
If i'm not mistaken, 1000 * 9.8 * 100pi = 980,000π