Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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- (USE METHOD OF SECTIONS)arrow_forwardThe bar rests against a 6-27 The bar shown in Fig. smooth vertical wall at end D. The support at A is a ball- and-socket joint. The cable is not continuous at B. Darrow_forward7 ft 5 ft The assembly shown above includes column AB, which has the following properties: Pinned (top and bottom) for buckling about x-axis Free at top and fixed at bottom for buckling about y-axis Circular cross-section with 8-inch diameter E = 10000 ksi Which of the following is closest to the critical buckling force of column AB? O Per = 269 kip O Per = 1080 kip O Per = 538 kip O Per = 135 kiparrow_forward
- Problem 2 Assume that Member AB may be considered as long and slender and consider only Euler buckling. What is the critical Euler buckling load and will Member AB buckle? What is the factor of safety of the compressive load with respect to the critical buckling load? Assume buckling only occurs in the plane of the paper. Note: E-30e6psi, I-6.36e-3 in', A-2.83 in², LAB-41.6 in, FAB-540 lb (compression). Also Member OB is 36 inches (3 ft) long. F=270 lbf 3 ft 3 60 A = 45270 LB, n = 83.8, buckles 48400 LB, n = A. Per B. Per C. Per = 1088 LB, n 897, does not buckle 2.02, does not buckle D. Per = 544 LB, n = 0.993, buckles E. None of Thesearrow_forwardConsider the steel truss and member cross-section presented in figures below. All the members of the truss have the same cross-section as shown in the figure to the right. They all also have a Young's Modulus of 210 GPa. What can the highest value of force F be before member AC fails by buckling? Force 1AN - 300 mm 40° 4 m $35 mm 7m 300 mm 8 m 35 mm 35 mm 35 mm Please provide your answer in kN.arrow_forwardConsider two types of a column cross-section: a hollow square and a hollow circular section. In both cases the wall thickness is 6 mm and the area occupied by the load-bearing material is 965 mm². Find which of these two column types produces a better buckling performance with relevant calculations supporting your answer. Answer The outer size of the hollow square section can be calculated as mm • The outer diameter of the hollow circular section can be calcualted as . mm The second moment of area for the hollow square section can be calculated as mm The second moment of area for the hollow circle section can be calculated as mm Find which of these two column types produces a better buckling performance. O Hollow Circular Section O Hollow Square Sectionarrow_forward
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