Fluids (Pressure 2)

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Continuation part 3

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Grace Balahay

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Fluids (Pressure 2)


Fluids (Pressure 2)Versión en línea Continuation part 3 por Grace Balahay 1 Determine (a) the total hydrostatic force on curved surface AB in Fig. P2.84 .Neglect atmospheric pressure and assume unit width into the paper. a 8285 N b 8825 N c 5288 N d 2858 N 2 Determine its line of action. Neglect atmospheric pressure and assume unit width into the paper. a 0.399 m above A, or 0.067 m below the water surface. b 0.933 m above A, or 0.076 m below the water surface. c 0.393 m above A, or 0.607 m below the water surface. d 0.933 m above A, or 0.067 m below the water surface 3 Compute the horizontal components of the hydrostatic force on the quarter-circle panel at the bottom of the water tank in Fig. P2.85. a 75000 N b 50700 N c 705000 N d 57000 N 4 Compute the vertical components of the hydrostatic force on the quarter-circle panel at the bottom of the water tank in Fig. P2.85. a 863000 N b 638000 N c 368000 N d 638800 N 5 The quarter circle gate BC in Fig. P2.86 is hinged at C. Find the horizontal force P required to hold the gate stationary. The width b into the paper is 3 m. Choose one or more answers a 57.8 kN b 58.7 kN c 75.8 kN d 85.7 kN 6 The bottle of champagne (SG =0.96) in Fig. P2.87 is under pressure as shown by the mercury manometer reading. Compute the net force on the 2-in-radius hemispherical end cap at the bottom of the bottle. a 28.5 lbf b 85.2 lbf c 58.2 lbf d 25.8 lbf 7 The tank in the figure contains benzene and is pressurized to 200 kPa(gage) in the air gap. Determine the vertical hydrostatic force on circular-arc section AB a 214400 N/m b 124200 N/m c 122400 N/m d 142200 N/m 8 The tank in the figure contains benzene and is pressurized to 200 kPa(gage) in the air gap. Determine its line of action. a 92.9 cm b 29.9 cm c 99.2 cm d 29.0 cm 9 A 1-ft-diameter hole in the bottom of the tank in Fig. P2.90 is closed by a 45° conical plug. Neglecting plug weight, compute the force F required to keep the plug in the hole. a 476 lbf b 746 lbf c 764 lbf d 467 lbf 10 The hemispherical dome in Fig. P2.91 weighs 30 kN and is filled with water and attached to the floor by six equally spaced bolts. What is the force in each bolt required to hold the dome down? a 90700 N b 97000 N c 70900 N d 79000 N 11 A 4-m-diameter water tank consists of two half-cylinders, each weighing 4.5 kN/m, bolted together as in Fig. P2.92. If the end caps are neglected, compute the force in each bolt. a 13100 N b 11300 N c 31100 N d 10310 N 12 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. a 2996 lbf, 313 lbf b 2969 lbf, 313 lbf c 2996 lbf, 331 lbf d 2969 lbf, 331 lbf 13 The uniform body A in the figure has width b into the paper and is in static equilibrium when pivoted about hinge O. What is the specific gravity of this body when (a) h = 0; and (b) h = R? a 3/3, 3/6 b 3/2,3/4 c 3/2, 3/6 d 3/2, 3/5 14 Curved panel BC is a 60° arc, perpendicular to the bottom at C. If the panel is 4 m wide into the paper, estimate the resultant hydrostatic force of the water on the panel. a 337 kN b 733 kN c 373 kN d 773 kN 15 Archimedes, when asked by King Hiero if the new crown was pure gold (SG = 19.3), found the crown weight in air to be 11.8 N and in water to be 10.9 N. Was it gold? a 13.1 (not pure gold) b 13.1 (pure gold) c 11.3 (not pure gold) d 11.3 (pure gold)

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Fluids (Pressure 2)

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Fluids (Pressure 2)Versión en línea

por Grace Balahay

Determine (a) the total hydrostatic force on curved surface AB in Fig. P2.84 .Neglect atmospheric pressure and assume unit width into the paper.

Determine its line of action. Neglect atmospheric pressure and assume unit width into the paper.

Compute the horizontal components of the hydrostatic force on the quarter-circle panel at the bottom of the water tank in Fig. P2.85.

Compute the vertical components of the hydrostatic force on the quarter-circle panel at the bottom of the water tank in Fig. P2.85.

The quarter circle gate BC in Fig. P2.86 is hinged at C. Find the horizontal force P required to hold the gate stationary. The width b into the paper is 3 m.

Choose one or more answers

The bottle of champagne (SG =0.96) in Fig. P2.87 is under pressure as shown by the mercury manometer reading. Compute the net force on the 2-in-radius hemispherical end cap at the bottom of the bottle.

The tank in the figure contains benzene and is pressurized to 200 kPa(gage) in the air gap. Determine the vertical hydrostatic force on circular-arc section AB

The tank in the figure contains benzene and is pressurized to 200 kPa(gage) in the air gap. Determine its line of action.

A 1-ft-diameter hole in the bottom of the tank in Fig. P2.90 is closed by a 45° conical plug. Neglecting plug weight, compute the force F required to keep the plug in the hole.

The hemispherical dome in Fig. P2.91 weighs 30 kN and is filled with water and attached to the floor by six equally spaced bolts. What is the force in each bolt required to hold the dome down?

A 4-m-diameter water tank consists of two half-cylinders, each weighing 4.5 kN/m, bolted together as in Fig. P2.92. If the end caps are neglected, compute the force in each bolt.

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.

The uniform body A in the figure has width b into the paper and is in static equilibrium when pivoted about hinge O. What is the specific gravity of this body when (a) h = 0; and (b) h = R?

Curved panel BC is a 60° arc, perpendicular to the bottom at C. If the panel is 4 m wide into the paper, estimate the resultant hydrostatic force of the water on the panel.

Archimedes, when asked by King Hiero if the new crown was pure gold (SG = 19.3), found the crown weight in air to be 11.8 N and in water to be 10.9 N. Was it gold?