
Concept explainers
The resultant force the water and surrounding air exert on the cap at B.

Explanation of Solution
Given:
Absolute pressure at point A
Inner diameter of the pipe
Atmospheric pressure
Pressure head of water
Density of water
Acceleration due to gravity is
Calculation:
Draw the free body diagram of the pipe as in Figure (1).
Determine the pressure at point B
Draw the pressure distribution on the pipe as in Figure (2).
Determine the area of the pipe (A).
Determine the resultant force
Thus, the resultant force the water and surrounding air exert on the cap at B is
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Chapter 2 Solutions
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