4. The change in weight of an airplane is determined from reading the strain gauge A mounted in the plane's aluminum wheel strut. Before the plane is loaded, the strain-gauge reading in the strut is &₁ = 0.00100 mm/mm, whereas after loading the reading is &₂ = 0.00243 mm/mm. How large was the mass increase? The cross- sectional area of the strut is 2150 mm² and the modulus of elasticity for aluminum is Eal = 70 GPa.

4. The change in weight of an airplane is determined from reading the strain gauge A mounted in the plane's aluminum wheel strut. Before the plane is loaded, the strain-gauge reading in the strut is &₁ = 0.00100 mm/mm, whereas after loading the reading is &₂ = 0.00243 mm/mm. How large was the mass increase? The cross- sectional area of the strut is 2150 mm² and the modulus of elasticity for aluminum is Eal = 70 GPa.

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

See similar textbooks

Similar questions

Question 14 Determine the total strain (mm/mm) of a 2.58-m bar with a diameter of 23 mm subjected to a tensile force of 96 kN at a temperature increase of 60 C°. Consider the a=22.4 µm/mC° and E = 139 GPa. Express your answer to 5 decimal places.
Four stress elements are shown below. All members have the same value for E (Young’s Modulus) and ν (Poisson’s ratio). Rank the members from largest to smallest absolute value of the normal strain in the y direction.
A force P of 70 N is applied by a rider to thefront hand brake of a bicycle (P is the resultant of anevenly distributed pressure). As the hand brake pivots atA, a tension T develops in the 460-mm long brake cable(Ae = 1.075 mm2 ), which elongates by δ = 0.214 mm.Find the normal stress d and strain in the brake cable.
1) An airplane's weight change is determined by reading the strain gauge A mounted on the plane's aluminum wheel strut. Before the plane is loaded, the strain gauge reading in the strut is &₁ = 0.00100 in./in., whereas after loading &2 = 0.00243 in./in. Determine the change in the force on the strut if the cross-sectional area of the strut is 3.5 in². and E = 10(10³) Ksi. O
The strain components ɛx = 466 µE, ɛy = -524 µe, and yxy = -646 µrad are given for a point in a body subjected to plane strain. Determine the angle Op corresponding to the orientation of the principal planes at the point. -12.12° None of the above -17.93° -13.75° -10.36° -16.56°
The strain components Ex, Ey, and Yxy are given for a point in a body subjected to plane strain. Using Mohr's circle, determine the principal strains, the maximum in-plane shear strain, and the absolute maximum shear strain at the point. Show the angle 0p, the principal strain deformations, and the maximum in-plane shear strain distortion in a sketch. Ex = 0 μE, Ey = 310 με, Yxy = 280 μrad. Enter the angle such that -45° ≤ 0,≤ +45° Answer: Ep1 = Ep2 = Ymax in-plane = Yabsolute max. = 0p = με με urad urad
A strain gauges system mounted at a point on a structural member that is subjected to multiaxial stress, where we have the following readings: Ex = 3.079 x1o-3. ; Ey = -3.471 x10-3; Ez = 1.207 x10-3; yxy = 3.743 x10-3; Determine the stress components if the member is made of an isotropic material with linear elastic behavior having the following elastic properties: Young's modulus E = 70 Gpa and shear modulus G = 26.7 Gpa;
When an axial load is applied to the ends of the bar shown in the figure, the total elongation of the bar between joints A and C is 0.15 in. In segment (2), the normal strain is measured as 1,450 uin./in. Assume L₁ = 44 in. and L₂ = 82 in. Determine (a) the elongation of segment (2). (b) the normal strain in segment (1) of the bar. (1) P L₁ B (2) L2
The normal strain in a suspended bar of material of varying cross section due to its own weight is given by the expression vy/3E where y = 2.3 lb/in.³ is the specific weight of the material, y = 0.8 in. is the distance from the free (i.e., bottom) end of the bar, L = 8 in. is the length of the bar, and E = 23000 ksi is a material constant. Determine, (a) the change in length of the bar due to its own weight. (b) the average normal strain over the length L of the bar. (c) the maximum normal strain in the bar.
A rigid steel bar is supported by three rods as shown. There is no strain in the rods before the load P is applied. After load P is applied, the normal strain in rods (1) is 4150 μm/m. Assume initial rod lengths of L₁ = 1,250 mm and L2 = 2,000 mm. Determine the normal strain in rod (2). (1) 4₁ Rigid bar (2) O 2849 μm/m O 3261 µm/m O 3071 µm/m O 3584 µm/m O 2594 μm/m B P L₂ C (1)
The normal strain in a suspended bar of material of varying cross section due to its own weight is given by the expression yy/3E where y = 3.0 lb/in.³ is the specific weight of the material, y = 6.3 in. is the distance from the free (i.e., bottom) end of the bar, L = 21 in. is the length of the bar, and E = 27000 ksi is a material constant. Determine, (a) the change in length of the bar due to its own weight. (b) the average normal strain over the length L of the bar (c) the maximum normal strain in the bar. Answer: (a) d = i (b) avg (c) Emax i x10-6 in. με με
The normal strain in a suspended bar of material of varying cross section due to its own weight is given by the expression yy/3E where y = 2.1 lb/in.³ is the specific weight of the material, y = 2.0 in. is the distance from the free (i.e., bottom) end of the bar, L = 5 in. is the length of the bar, and E = 27000 ksi is a material constant. Determine, (a) the change in length of the bar due to its own weight. (b) the average normal strain over the length L of the bar (c) the maximum normal strain in the bar. Answer: (a) 8 = i (b) avg (c) Emax = i x10 in. με με