INTERNATIONAL EDITION---Engineering Mechanics: Statics, 14th edition (SI unit)
14th Edition
ISBN: 9780133918922
Author: Russell C. Hibbeler
Publisher: PEARSON
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Chapter 4.8, Problem 115P
To determine
The equivalent resultant force, direction of the resultant force, and the line of action measured from A.
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University of Babylon
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Mid Examination/ Stage: 3rd
Subject: Theory of Vehicles
Date: 14 \ 4 \2025
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2025-2024
Q1: The arms of a Porter governor are 250 mm long. The upper arms are pivoted on
the axis of revolution, but the lower arms are attached to a sleeve at a distance of 50
mm from the axis of rotation. The weight on the sleeve is 600 N and the weight of
each ball is 80 N. Determine the equilibrium speed when the radius of rotation of the
balls is 150 mm. If the friction is equivalent to a load of 25 N at the sleeve, determine
the range of speed for this position.
Q2: In a loaded Proell governor shown in Figure below each ball weighs 3 kg and
the central sleeve weighs 25 kg. The arms are of 200 mm length and pivoted about
axis displaced from the central axis of rotation by 38.5 mm, y=238 mm, x=303.5
mm, CE 85 mm, MD 142.5 mm. Determine the equilibrium speed.
Fe
mg
E
M
2
Q3: In a spring loaded Hartnell type…
Q.2: (15 Marks)
=
1400
For the following system, determine the first natural frequency using Dunkerley's equation,
Given that the disk has moment of inertia J = 2 kg.m², the shaft has G = 20 GPa, p
kg/m³, polar moment of cross-sectional area of the shaft Ip = 8×108 m².
500 mm
220 mm
k=200 N/m
FOF
m=1 kg
14.14
56.56. W
сл
Q.2: (15 Marks)
=
1400
For the following system, determine the first natural frequency using Dunkerley's equation,
Given that the disk has moment of inertia J = 2 kg.m², the shaft has G = 20 GPa, p
kg/m³, polar moment of cross-sectional area of the shaft Ip = 8×108 m².
500 mm
220 mm
k=200 N/m
FOF
m=1 kg
14.14
56.56. W
сл
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