1. Assignment 2
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MET212-Fluid Mechanics & Machines
Semester, March 8, 2012
Assignment # 2
Name…… ……… ……… …… ………… I.D No.…….… ………
Due date: March 13,2012 for Tue class and March 14, 2012 for Wed class
(Submit as an individual work in a separate paper including this page as a cover page and keep your copy)
1. A rectangular gate is located at the end of a rectangular way with 3-m-wide and 8-m-high which is
connected to a huge open reservoir overflowing with water as shown in Figure. The door is hinged at
its base and held closed by a straight force, F
, located at the center of the gate. The maximum value
is 4000 kN.
(a) Determine the maximum water depth, h,
(b) Determine the moment that would apply to the gate.
2. A double U-tube manometer is connected to a pipe as shown in Figure. Taking the dimensions and
fluids as indicated; calculate the absolute pressure at point at A (centre of the pipe). Take Patm 101325 Pa
and the ρHg as 13600 kg/m3
2. Assignment 2
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3. A manometer is used to measure the pressure in a tank. The fluid has a SG of 0.85, and the
manometer column height is 55 cm, as shown in Figure. If the local atmospheric pressure is 96 kPa,
determine the value of h1. Note: consider the pressure as absolute pressure.
4. An inverted U-tube manometer connects pipes A and B as shown in Figure 3. The manometer
fluid is oil of density 900 kg/m3
; pipes A and B contain water. Calculate pressure difference
between A and B where pA and pB are the pressures at the pipe centres, as shown.