3.A large casting is suspended from two wires as shown below. The initial length ofboth wires is identical at 1.5 meters and both wires are 5 mm in diameter. The steel wire ismade from SAE 1020 cold drawn alloy steel and the copper wire is made from C14500copper (hard).(a) The casting is suspended such that the tensile load in each wire is identical. Whatwill be the difference in wire length between the two wires when the weaker wirereaches its yield point?(b) What mass (kg) of casting can be suspended based on the limitation in part (a)? SteelwireСopperwireCasting

Answered: Image /qna-images/answer/37466c4b-2022-46c1-83f1-4a7a391321ca.jpg

Answered: 3. both wires is identical at 1.5…

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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A cylindrical metal rod of 20mm diameter and 1m length is subjected to a tensile load of 60KN. To what length the cylinder should be centrally bored on one side to reduce weight by material removal, so that the total extension will increase by 10 percent under the same pull. The diameter of the hole being bored on one side is equal to 10mm. Take E= 200GPa.
I did a torsion test to experimentally calculate the brass modulus of rigidity. My experimental modulus value is lower than the published. What could have caused this?
a bolt has a requirement of being tightened to 38 Nm. You pull on the end of a 25 cm wrench at an angle if 120° to the radial arm line. what is the force of the pull needed?
If the axial rigidity of steel bar of 1m length is 200 x 107 N, what will be the axial flexibility of the bar?
Sketch a tensile member with (a) a rectangular crosssection, (b) a solid circular cross section, and (c) a circulartubecross section, and label the dimensions symbolically (e.g.,label the radius for the solid circular case). For each member, write out the definition of engineering stress in terms of the actual dimensions of the component. If therectangular member has dimensions of width and thicknessequal to 1 cm 0.3 cm, what would be the radius of a solidcircular member such that the stress is equal for an equaltensile load? If a tube has an outer radius equal to that ofthis same solid cylinder, what is the maximum inner radiussuch that the stress does not exceed 200% of the stress inthe solid cylinder?
A 1.23 cm diameter bar is subjected to a load of 2500 kg. Calculate the engineering stress on the bar in megapascals (MPa)?
Using the figure from Question 2, imagine the lamp gets heavier and heavier until one of the cables breaks. If all of the cables have the same tensile strength, a) which one will break first, and b) why will that one specifically break first? You do not need to provide Given, Assume, and Problem Type/Features for this question. You just need to provide Find, Analyses and a Conclusion. Provide an explanation for b) that isclear, concise, correct and well organized. Use at least one diagram (2D or 3D) to make your case as to why one of them will break before the others. You can use equations/math to support your explanation as well, if you want, but expressing your answer in words and using logic will be all that is necessary. Youranswer to a) i.e. which one will break first, can be your “Conclusion” to Question 3
A current problem in the U.S. Air Force is the neck/shoulder fatigue experienced by pilots. To be able to fly missions at night, the pilots wear night vision goggles, which are attached to the front of the helmet. Unfortunately, these are heavy, causing a large downward torque of the head, which must be counteracted by the neck muscles, which then fatigue. To alleviate this problem, many pilots have started attaching random lead weights to the back of the helmet. Find the appropriate weight that would best balance the head and minimize neck fatigue – You must show your free body diagram. Assumptions: a) center of gravity of goggles is 20 cm in front of neck pivot point, b) load of goggles1.0 kg mass, c) center of gravity of lead weight is 10 cm behind neck pivot point, d) load of bare helmet 3 kg mass, e) center of gravity of helmet is 2 cm in front of neck pivot, f) load of head 4.0 kg mass, and g) center of gravity of head is right at neck pivot point. Answer: ___________________
Tensile test is a method to investigate the elasticity of a material. A test specimen is placed between two clamps and these clamps will move in opposite directions, hence straining the test specimen. This experiment will yield a stress-strain curve that shows each of the stages of the specimen for every load is applied. With an aid of sketching diagrams, describe the stages that the specimen experiences before it breaks, and relate it with the stress-strain curve. It is expected that each stage comes with a sketching of the specimen and explanation of the current stage.
A tensile force of 120 kN is applied on a 0.02-m diameter and 2-m long rod. After applying the load, the diameter of the rod decreases to 0.01998 m and the length increases to 2.01 m. The engineering stress on that rod is?
A load of 22 kips is gradually applied to a 2-in round rod, 10 ft long. The total elongation is observed to be 0.03 in. If the stretching is entirely elastic, A. what is the modulus of elasticity, and B. what material would you judge it to be, wrought iron or stainless steel? C. how much energy is absorbed by the rod? D. Suppose that the material is aluminum alloy 3003-H14 (Table AT 3, Faires); compute its elongation for the same load. Is this within elastic action?
[Please Write Clean and Provide Complete Explanation] One end of a 2 m long steel rod (d = 3 cm) is rigidly attached to a wall so that the rod is perpendicular to the wall. The other end of the rod is welded to a second rod, which is 1 m long (d = 1.0 cm). The second rod is parallel to the wall and the floor. A vertical force of 50 N is applied to the end of the second rod. For both rods, the modulus of elasticity is 210 × 109 Pa and the shear modulus is 79 × 10 9 Pa. There is an infinitesimally small cubic element at the top surface of the 3 cm diameter rod immediately adjacent to the wall, that is, at (0, 1.5, 0). What is most nearly the maximum normal stress due to the bending moment?

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