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Solution Homework 03
P2.85 Compute the horizontal and vertical components of the hydrostatic force on the quarter-circle
panel at the bottom of the water tank in Fig. P2.85
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P2.94 The 4-ft diameter log (SG=0.80) in Fig. P2.94 is 8 ft long into the paper and dams water as
shown. Compute the net vertical and horizontal reactions at point C.
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P3.12 The pipe flow in Fig. P3.12 fills a cylindrical surge tank as shown. At time t=0, the water
depth in the tank is 30 cm. Estimate the time required to fill the remainder of the tank.
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P3.14 The open tank in Fig.P3.14 contains water at 20°C and is being filled through section 1.
Assume incompressible flow. First derive an analytic expression for the water-level change dh / dt
in terms of arbitrary volume flows ( Q1 , Q2 , Q3 ) and tank diameter d . Then, if the water level h is
constant, determine the exit velocity V2 for the given data V1 = 3 m / s and Q3 = 0.01 m3 / s .