Past Year Questions: Hydrostatic Forces Notes | EduRev

Fluid Mechanics

Civil Engineering (CE) : Past Year Questions: Hydrostatic Forces Notes | EduRev

The document Past Year Questions: Hydrostatic Forces Notes | EduRev is a part of the Civil Engineering (CE) Course Fluid Mechanics.
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Question 1. A sector gate is provided on a spillway as shown in the figure. Assuming g = 10 m/s2, the resultant force per meter length (expressed in kN/m) on the gate will be_______ .     [2016 : 2 Marks, Set-I]
Past Year Questions: Hydrostatic Forces Notes | EduRev
Solution:
Past Year Questions: Hydrostatic Forces Notes | EduRev
Past Year Questions: Hydrostatic Forces Notes | EduRev

Question 2. A triangular gate with a base width of 2 m and a height of 1.5 m lies in a vertical plane. The top vertex of the gate is 1.5 m below the surface of a tank which contains oil of specific gravity 0.8. Considering the density of water and acceleration due to gravity to be 1000 kg/m3 and 9.81 m/s2, respectively, the hydrostatic force (in kN) exerted by the oil on the gate is _________ .     [2015 : 2 Marks, Set-II]
Solution:

Past Year Questions: Hydrostatic Forces Notes | EduRev
Past Year Questions: Hydrostatic Forces Notes | EduRev

Question 3. Three rigid buckets, shown as in the figures (1), (2) and (3), are of identical heights and base areas. Further, assume that each of these buckets have negligible mass and are full of water. The weight of water in these buckets are denoted as W1,  W2, and W3 respectively. Also, let the force of water on the base of the bucket be denoted as F1, F2, and F3 respectively. The option giving an accurate description of the system physics is    [2014 : 2 Marks, Set-I]
Past Year Questions: Hydrostatic Forces Notes | EduRev
(a) W2 = W1 = W3 and F2 > F1 > F
(b) W2 > W1 > W3 and F2 > F1 > F
(c) W2 = W1 = W3 and F1 = F2 = F
(d) W2 > W1 > W3 and F1 = F2 = F
Answer: 
(d)
Solution: 
Bucket → identical height → identical base area
Past Year Questions: Hydrostatic Forces Notes | EduRev
=> w2> w1> w
Force on the base in each case will be equal to = Past Year Questions: Hydrostatic Forces Notes | EduRev
Hence, F1 = P2 = F3

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