In Figure P3-21, specify a suitable aluminum alloyfor the member AB if the load is to be repeated3-21.many times. Consider only the square part near themiddle of the member. ASquare20 mm2.5 m1.5 m -12.5 kNSupport for Problem 3-21.FIGURE P3-21

Drawing the free body diagram of the given system,

Answered: In Figure P3-21, specify a suitable…

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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BI In Figure 6, column BD has a square cross section. It is pinned at B and fixed against rotation at D. However, there is no restraint on the horizontal displacement of point D. Derive a symbolic formula for the critical load of column BD, as a function of E (the Young's modulus of the material that makes column BD), I (the moment of inertia of the cross section of BD) and L (the length of column BD). 10 in.- -40 in.- 45 in. 35 in. 0.625 in. 0.625 in. E
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The 200 x 200 x 1,250-mm oak [E-12 GPa] block (2) shown is reinforced by bolting two 5 x 200 x 1,250 mm steel [E - 200 GPa] plates (1) to opposite sides of the block. A concentrated load of 300 kN is applied to a rigid cap. Assume P-300 kN, L-1.25 m. Determine (a) the normal stresses in the steel plates (1) and the oak block (2). (b) the shortening of the block when the load is applied. B (1) Answers: A₁- A₂- i Part 2 Calculate the cross-sectional area of each steel plate, A₁, and the cross-sectional area of the oak block, Az. i Save for Later P CL (2) C Answer: F₂/F₁- CL Save for Later CL (1) mm² mm² Derive a compatibility equation using force-deformation relationships substituted into a geometry-of-deformation relationship. Express the compatibility equation here as the ratio of the force in the oak block, F₂, to the force in each steel plate, F₁. Attempts: 0 of 1 used Submit Answer Attempts: 0 of 1 used Submit Answer
A 12” X 16”simply supported pine wood beam is being considered to carry a uniform load distribution across a span of 12’ as shown. In addition to the uniform load, the beam is also subjected to a tensile load of 20 kips. If the ultimate tensile stress in pine wood is 4500 psi, determine whether the beam is considered safe according to the Allowable Stress Method, using a Factor of Safety 2.5. Hint: you can calculate the maximum tensile stress in the cross-section without having to use Mohr’s circle
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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 These

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In Figure P3-21, specify a suitable aluminum alloy for the member AB if the load is to be repeated 3-21. many times. Consider only the square part near the middle of the member. A Square 20 mm 2.5 m 1.5 m - 12.5 kN Support for Problem 3-21. FIGURE P3-21