Fundamentals of Heat and Mass Transfer
7th Edition
ISBN: 9780470917855
Author: Bergman, Theodore L./
Publisher: John Wiley & Sons Inc
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Question
Chapter 3, Problem 3.127P
(a)
To determine
The expression that can be used to calculate the friction coefficient from the known quantities.
(b)
To determine
The radial temperature distribution T(r) in the disk.
(c)
To determine
The friction coefficient and the maximum temperature in the disk.
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A 20 mm ø steel rod of weight 5 kN is inserted between two walls 1.5 m apart as shown. Initially, the rod fits between the walls. What is the deformation experienced by the rod due to weight ? The coefficient of static friction between the walls and the rod is 0.20. For steel, E = 200 GPa and α = 12 x 10-6/°C.
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Figure
B
A
1 of 1
L
Part A - Determining the normal force exerted by the crate on the wedge
Determine the normal force No that the crate exerts on the wedge when the system is at rest.
Express your answer to three significant figures and include the appropriate units.
► View Available Hint(s)
Nc =
Submit
O
P =
Submit
μA
Value
Part B - Finding the smallest horizontal force P to move the crate upward
Units
Determine the magnitude of the smallest horizontal force P that is necessary to begin moving the crate upward.
Express your answer to three significant figures and…
Chapter 3 Solutions
Fundamentals of Heat and Mass Transfer
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