mechanical advantage of 8 to 1. If the large piston has an area of 150 cm, what load, F2, can be raised by a force of 30 N applied to the lever? Neglect the hydrostatic pressure

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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PROBLEMS
Question 1
The basic elements of a hydraulic press are shown in Figure 1. The plunger has an area of
3-cm, and a force, F1, can be applied to the plunger through a lever mechanism having a
mechanical advantage of 8 to 1. If the large piston has an area of 150 cm², what load, F2,
can be raised by a force of 30 N applied to the lever? Neglect the hydrostatic pressure
variation.
F2
Plunger
Hydraulic fluid
F1
Figure 1
Question 2
A U-tube manometer is connected to a closed tank containing air and water as shown in
Figure 2. At the closed end of the manometer the absolute air pressure is 140kPa.
Determine the reading on the pressure gage for a differential reading of 1.5-m on the
manometer. Express your answer in gage pressure value. Assume standard atmospheric
pressure and neglect the weight of the air columns in the manometer.
-Closed valve
Air pressure = 140kPa (abs)
1.5m
Air
0.8m
Water
Gage fluid
(y = 12000 N/m)
Pressure
gage
Figure 2
1
Question 3
A closed cylindrical tank filled with water has a hemispherical dome and is connected to
an inverted piping system as shown in Figure 3. The liquid in the top part of the piping
system has a specific gravity of 0.8, and the remaining parts of the system are filled with
water. If the pressure gage reading at A is 60 kPa, determine: (a) the pressure in pipe B,
and (b) the pressure head, in millimeters of mercury, at the top of the dome (point C).
Hemispherical dome
SG = 0.8
P. =
60 kPa
4 m
3 m
3 m
Water
2 m
B
Water
Figure 3
Question 4
A U-tube manan eter contains oil, mercuv and water as shown in Egure 4. For the
column heights indicated what is the pressure differential between pipes A and B?
Transcribed Image Text:3G P "ll zain IQ 2_52314038130... > PROBLEMS Question 1 The basic elements of a hydraulic press are shown in Figure 1. The plunger has an area of 3-cm, and a force, F1, can be applied to the plunger through a lever mechanism having a mechanical advantage of 8 to 1. If the large piston has an area of 150 cm², what load, F2, can be raised by a force of 30 N applied to the lever? Neglect the hydrostatic pressure variation. F2 Plunger Hydraulic fluid F1 Figure 1 Question 2 A U-tube manometer is connected to a closed tank containing air and water as shown in Figure 2. At the closed end of the manometer the absolute air pressure is 140kPa. Determine the reading on the pressure gage for a differential reading of 1.5-m on the manometer. Express your answer in gage pressure value. Assume standard atmospheric pressure and neglect the weight of the air columns in the manometer. -Closed valve Air pressure = 140kPa (abs) 1.5m Air 0.8m Water Gage fluid (y = 12000 N/m) Pressure gage Figure 2 1 Question 3 A closed cylindrical tank filled with water has a hemispherical dome and is connected to an inverted piping system as shown in Figure 3. The liquid in the top part of the piping system has a specific gravity of 0.8, and the remaining parts of the system are filled with water. If the pressure gage reading at A is 60 kPa, determine: (a) the pressure in pipe B, and (b) the pressure head, in millimeters of mercury, at the top of the dome (point C). Hemispherical dome SG = 0.8 P. = 60 kPa 4 m 3 m 3 m Water 2 m B Water Figure 3 Question 4 A U-tube manan eter contains oil, mercuv and water as shown in Egure 4. For the column heights indicated what is the pressure differential between pipes A and B?
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