Bundle: Refrigeration And Air Conditioning Technology, 8th + Lab Manual + Lms Integrated For Mindtap Hvac-r, 4 Terms (24 Months) Printed Access Card
8th Edition
ISBN: 9781337087315
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 31, Problem 39RQ
To determine
Dilution air.
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20 in.
PROBLEM 15.206
Rod AB is connected by ball-and-socket joints to collar A and to the
16-in.-diameter disk C. Knowing that disk C rotates counterclockwise at
the constant rate ₁ =3 rad/s in the zx plane, determine the velocity of
collar A for the position shown.
25 in.
B
8 in.
Answer: -30 in/s
=
B
Z
001
2.5 ft
PROBLEM 15.236
The arm AB of length 16 ft is used to provide an elevated
platform for construction workers. In the position shown, arm
AB is being raised at the constant rate de/dt = 0.25 rad/s;
simultaneously, the unit is being rotated about the Y axis at the
constant rate ₁ =0.15 rad/s. Knowing that 20°, determine
the velocity and acceleration of Point B.
Answers: 1.371 +3.76)+1.88k ft/s
a=1.22 -0.342)-0.410k ft/s²
X
F1
3
5
4 P
F2
F2
Ꮎ
Ꮎ
b
P
3
4
5
F1
The electric pole is subject to the forces shown. Force F1
245 N and force F2 = 310 N with an angle
= 20.2°.
Determine the moment about point P of all forces. Take
counterclockwise moments to be positive.
=
Values for dimensions on the figure are given in the following
table. Note the figure may not be to scale.
Variable Value
a
2.50 m
b
11.3 m
C
13.0 m
The moment about point P is 3,414
m.
× N-
If the moment about point P sums up to be zero. Determine
the distance c while all other values remained the same.
1.26
m.
Chapter 31 Solutions
Bundle: Refrigeration And Air Conditioning Technology, 8th + Lab Manual + Lms Integrated For Mindtap Hvac-r, 4 Terms (24 Months) Printed Access Card
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