HEAT&MASS TRANSF. (LL) W/CONNECT<CUSTOM>
6th Edition
ISBN: 9781266141652
Author: CENGEL
Publisher: MCG
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Problem 2.
The homogeneous disk of weight W = 6 lb rotates at the constant rate co₁ = 16 rad/s with respect
to arm ABC, which is welded to a shaft DCE rotating at the constant rate 2 = 8 rad/s. Assume
the rod weight is negligible compared to the disk. Determine the dynamic reactions at D and E
(ignore mg).
Answers:
D=-7.12ĵ+4.47k lb
r-8 in.
9 in.
B
D
E=-1.822+4.47 lb
9 in.
E
12 in.
12 in.
x
Problem 3.
Each of the right angle rods has a mass of 120 g and is welded to the shaft, which rotates at a steady
speed of 3600 rpm. Ignore the weight of the shaft AB. Find the bearing dynamic reaction at A
due to the dynamic imbalance of the shaft. (ignore mgs)
100
N
A
100
100
100
100
100
(Dimensions in millimeters)
Answer: A=-8521-426j N
B
Thermodynamics. Need help solving this. Step by step with units
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