1 m 1 m 30° b. 0.5 m 0.5 m b 1m -75 mm-

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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1 m
1 m
1 m
b
B
30°
0.5 m 0.5 m
b
-1m
75 mm-
75 mm
A
25 mm
Section b-b
Figure 3 (not to scale)
A drum is suspended from the wooden frame ABC as shown in Figure 3. The mass
of the drum is 20 kg. The frame ABC is supported by the 2 mm diameter, A-36 steel
cable DB and by a pin support at A. You are required to:
a
Calculate all the internal forces acting at the cross section b-b and in cable BD.
b Calculate the orientation of the plane and the magnitude of the maximum in-
plane shear stress at point F, on section b-b, and represent this condition using a
stress element.
с
Determine the factor of safety (F.S.) of the cable BD for this loading based on the
maximum-distortion energy theory (von Mises).
Transcribed Image Text:1 m 1 m 1 m b B 30° 0.5 m 0.5 m b -1m 75 mm- 75 mm A 25 mm Section b-b Figure 3 (not to scale) A drum is suspended from the wooden frame ABC as shown in Figure 3. The mass of the drum is 20 kg. The frame ABC is supported by the 2 mm diameter, A-36 steel cable DB and by a pin support at A. You are required to: a Calculate all the internal forces acting at the cross section b-b and in cable BD. b Calculate the orientation of the plane and the magnitude of the maximum in- plane shear stress at point F, on section b-b, and represent this condition using a stress element. с Determine the factor of safety (F.S.) of the cable BD for this loading based on the maximum-distortion energy theory (von Mises).
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