3. Figure Q3 shows a conical bearing subjected to a uniform pressure distribution at its surface of contact. The bearing supports an axial force, F = 2500 N. If a torque, T= 250 Nm, is applied to the shaft of radius, R = 0.15 m, and causes it to rotate at constant velocity, determine the kinetic coefficient of friction at the surface of contact. F $ T R 30% Figure Q3

3. Figure Q3 shows a conical bearing subjected to a uniform pressure distribution at its surface of contact. The bearing supports an axial force, F = 2500 N. If a torque, T= 250 Nm, is applied to the shaft of radius, R = 0.15 m, and causes it to rotate at constant velocity, determine the kinetic coefficient of friction at the surface of contact. F $ T R 30% Figure Q3

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.57P: The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a...

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Concept explainers

Combined Loading

Any functioning component, such as machine parts, structural members, pressure vessels, and so on, are all under the influence of more than one force. When anybody is under the influence of more than one force such as shear forces, bending moments, axial forces, torsion, and so on, then such body is said to be under combined loading. A very practical example of combined loading is the crankshaft of an internal combustion engine (IC engine). The crankshaft of the IC engine is under high rpm, which is caused due to the torsional forces. Due to the presence of piston, counterbalances, and internal imbalances, the crankshaft experiences lateral forces and due to the rise in temperature, the crankshaft undergoes thermal expansion, which pulls the crankshaft along the axial direction and lateral direction. The presence of unbalanced loads along the periphery of the crankshaft also induces a bending moment.

Question

3.
Figure Q3 shows a conical bearing subjected to a uniform pressure distribution at
its surface of contact. The bearing supports an axial force, F = 2500 N. If a torque,
T= 250 Nm, is applied to the shaft of radius, R = 0.15 m, and causes it to rotate at
constant velocity, determine the kinetic coefficient of friction at the surface of
contact.
F
$₁
T
R
Turn over
30°
Figure Q3

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