Rigid bar ABC is supported by a pin at A and a 100 mm wide by 6 mm thick aluminum [E Q-12 = 70 GPa; a = 22.5x10-6/°C; v = 0.33] alloy bar at B. A strain gage affixed to the surface of the aluminum bar is used to measure its longitudinal strain. Before load P is applied to the rigid bar at C, the strain gage measures zero longitudinal strain at an ambient temperature of 20°C. After load P is applied to the rigid bar at C and the temperature drops to – 10°C, a longitudinal strain of 2,400 µɛ is measured in the aluminum bar. Determine (a) the stress in member (1). (b) the magnitude of load P. (c) the change in the width of the aluminum bar (i.e., the 100 mm dimension). (1) 100 mm 1.3 m Strain P gage B C 1.5 m 1.0 m Figure Q-12
Rigid bar ABC is supported by a pin at A and a 100 mm wide by 6 mm thick aluminum [E Q-12 = 70 GPa; a = 22.5x10-6/°C; v = 0.33] alloy bar at B. A strain gage affixed to the surface of the aluminum bar is used to measure its longitudinal strain. Before load P is applied to the rigid bar at C, the strain gage measures zero longitudinal strain at an ambient temperature of 20°C. After load P is applied to the rigid bar at C and the temperature drops to – 10°C, a longitudinal strain of 2,400 µɛ is measured in the aluminum bar. Determine (a) the stress in member (1). (b) the magnitude of load P. (c) the change in the width of the aluminum bar (i.e., the 100 mm dimension). (1) 100 mm 1.3 m Strain P gage B C 1.5 m 1.0 m Figure Q-12
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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![Rigid bar ABC is supported by a pin at A and a 100 mm wide by 6 mm thick aluminum [E
Q-12
= 70 GPa; a = 22.5x10-6/°C; v = 0.33] alloy bar at B. A strain gage affixed to the surface of the
aluminum bar is used to measure its longitudinal strain. Before load P is applied to the rigid bar
at C, the strain gage measures zero longitudinal strain at an ambient temperature of 20°C. After
load P is applied to the rigid bar at C and the temperature drops to – 10°C, a longitudinal strain
of 2,400 µɛ is measured in the aluminum bar. Determine
(a) the stress in member (1).
(b) the magnitude of load P.
(c) the change in the width of the aluminum bar (i.e., the 100 mm dimension).
(1)
100 mm
1.3 m
Strain
P
gage
B
C
1.5 m
1.0 m
Figure Q-12](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0e44f62c-4627-49d3-9251-7fdef5bd755e%2F9d358b01-8c5b-4d3d-9d2b-c70e6625a661%2Foqbpaky.png&w=3840&q=75)
Transcribed Image Text:Rigid bar ABC is supported by a pin at A and a 100 mm wide by 6 mm thick aluminum [E
Q-12
= 70 GPa; a = 22.5x10-6/°C; v = 0.33] alloy bar at B. A strain gage affixed to the surface of the
aluminum bar is used to measure its longitudinal strain. Before load P is applied to the rigid bar
at C, the strain gage measures zero longitudinal strain at an ambient temperature of 20°C. After
load P is applied to the rigid bar at C and the temperature drops to – 10°C, a longitudinal strain
of 2,400 µɛ is measured in the aluminum bar. Determine
(a) the stress in member (1).
(b) the magnitude of load P.
(c) the change in the width of the aluminum bar (i.e., the 100 mm dimension).
(1)
100 mm
1.3 m
Strain
P
gage
B
C
1.5 m
1.0 m
Figure Q-12
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