In the figure below, an open tube of length L = 1.8 m andcross-sectional area A = 4.6 cm2 is fixed tothe top of a cylindrical barrel of diameter D = 1.2 m andheight H = 1.8 m. The barrel and tube are filled withwater (to the top of the tube). Calculate the ratio of thehydrostatic force on the bottom of the barrel to the gravitationalforce on the water contained in the barrel.
Your answer is incorrect.

Why is that ratio not equal to 1.0? (You need not consider theatmospheric pressure.)
Pressure is set bythe depth of the water, not by the horizontal extent. The force onthe bottom is the product of the pressure and thearea.


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