Quiz 1Q1: A reducing elbow is used to deflect water flow at a rate of 25 kg/s in a horizontalpipe upward by an angle of 45° from the flow direction while accelerating it. The elbowdischarges water into the atmosphere. The diameter of pipe is 150 mm at the inlet and30 mm at the exit. The elevation difference between the centers of the exit and the inletis 40 cm. The volume of the water in bend is 0.053 m³. Determine the resultant forceexerted on bend.30 mm150 mm40 cm45°WaterQ2: Water is siphoned from a large tank and discharges into the atmosphere through a 2-in.-diameter tube as shown in Fig. The end of the tube is 3 ft below the tank bottom, and viscouseffects are negligible. (a) Determine the volume flowrate from the tank. (b) Determine themaximum height, H, over which the water can be siphoned without cavitation occurring.Atmospheric pressure is 14.7 psia, and the water vapor pressure is 0.26 psiaH2-in. diameter10 ft4 ftD

Bernoulli's equation Bernoulli's equation states that the fluid moving with pressure P, density ρ,…

Q1: A reducing elbow is used to deflect water flow at a rate of 25 kg/s in a horizontal pipe upward by an angle of 45° from the flow direction while accelerating it. The elbow discharges water into the atmosphere. The diameter of pipe is 150 mm at the inlet and 30 mm at the exit. The elevation difference between the centers of the exit and the inlet is 40 cm. The volume of the water in bend is 0.053 m³. Determine the resultant force exerted on bend. 30 mm 150 mm |40 cm \45° Water

Q1: A reducing elbow is used to deflect water flow at a rate of 25 kg/s in a horizontal pipe upward by an angle of 45° from the flow direction while accelerating it. The elbow discharges water into the atmosphere. The diameter of pipe is 150 mm at the inlet and 30 mm at the exit. The elevation difference between the centers of the exit and the inlet is 40 cm. The volume of the water in bend is 0.053 m³. Determine the resultant force exerted on bend. 30 mm 150 mm |40 cm \45° Water

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

System of Forces

A force is an external influence or agent that changes the state of a system. According to Newton's second law, the force applied to a body is proportional to the change in momentum of a body. Hence, whenever a force is applied to a body, its momentum changes. If the body is at rest, under the action of force, its state of rest changes to motion. In other words, the magnitude of the momentum of the body changes from zero to a measurable value. Similarly, if the body possesses some initial velocity, it has some associated momentum, the effect of force can cause the body to halt or come to rest, that is, the momentum reduces to zero.

Question

Quiz 1
Q1: A reducing elbow is used to deflect water flow at a rate of 25 kg/s in a horizontal
pipe upward by an angle of 45° from the flow direction while accelerating it. The elbow
discharges water into the atmosphere. The diameter of pipe is 150 mm at the inlet and
30 mm at the exit. The elevation difference between the centers of the exit and the inlet
is 40 cm. The volume of the water in bend is 0.053 m³. Determine the resultant force
exerted on bend.
30 mm
150 mm
40 cm
45°
Water
Q2: Water is siphoned from a large tank and discharges into the atmosphere through a 2-in.-
diameter tube as shown in Fig. The end of the tube is 3 ft below the tank bottom, and viscous
effects are negligible. (a) Determine the volume flowrate from the tank. (b) Determine the
maximum height, H, over which the water can be siphoned without cavitation occurring.
Atmospheric pressure is 14.7 psia, and the water vapor pressure is 0.26 psia
H
2-in. diameter
10 ft
4 ft
D

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