EP ENGR.MECH.-MOD.MASTERING ACCESS
15th Edition
ISBN: 9780134867267
Author: HIBBELER
Publisher: PEARSON CO
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Textbook Question
Chapter 8, Problem 108P
The collar bearing uniformly supports an axial force of P = 8 kN. If a torque of M=200 N·m is applied to the shaft and causes it to rotate at constant velocity, determine the coefficient of kinetic friction at the surface of contact.
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Students have asked these similar questions
A collar bearing C is supported by a fixed annular plate. The axial load on
the shaft is F = 600 N, and the coefficient of kinetic friction between the
collar and the plate is μ = 0.3. The area of contact has an inside diameter of
D₁ = 60 mm, and the outside diameter is D₂ = 180 mm. Determine the torque
required to rotate the shaft at a constant rate.
C
F
M
C
F
D₁ -
D₂
M
4. The mine car and its
contents have a total mass of
6000 kg and a centre of
gravity at G. If the coefficient
of static friction
10 kN
between the wheels and the
0.9 m
•G
tracks is u = 0.4 when the
wheels are locked, find the
normal force acting on the
front wheels at B and the rear
0.15 m
0.6 m -
1.5 m
wheels at A when the brakes
at both A and B are locked.
Does the car move?
[Ans. NA = 16.5 kN, Ng =42.3
kN, the car does not move]
%3D
lyp
B: A roll of paper has a uniform weight of 2kN and is suspended from the wire
hanger so that it rests against the wall. If the hanger has a negligible weight and
the bearing at 0 can be considered frictionless, determine the force P needed to
start turning the roll if 6 = 30°. The coefficient of static friction between the wall
and the paper is µ, = 0.3.
12 cm
Chapter 8 Solutions
EP ENGR.MECH.-MOD.MASTERING ACCESS
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