(6) There are many kinds of polyethylene foam, each with different properties. The low density polyethylene foams (as seen in this video) are very flexible. Remember: in solid mechanics, "flexible" just means that in comparison to other materials, the material deforms quite a bit, relative to the stress. For torsion, the material property that relates to stiffness is the shear modulus (or modulus of rigidity), G. We'll say that G = 6 MPa. a) Complete the FBD. b) Compute the shear stress at Point B. c) Illustrate it on a stress element. d) Report the shear strain at B (in radians). FBD: 11 T=2 kN-m POINT B 300mm 1m

(6) There are many kinds of polyethylene foam, each with different properties. The low density polyethylene foams (as seen in this video) are very flexible. Remember: in solid mechanics, "flexible" just means that in comparison to other materials, the material deforms quite a bit, relative to the stress. For torsion, the material property that relates to stiffness is the shear modulus (or modulus of rigidity), G. We'll say that G = 6 MPa. a) Complete the FBD. b) Compute the shear stress at Point B. c) Illustrate it on a stress element. d) Report the shear strain at B (in radians). FBD: 11 T=2 kN-m POINT B 300mm 1m

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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Two somewhat heavy people enter an elevator. Based on their weight, the force that they exert on the steel cable (20 meter length, 0.05m diameter, Young's modulus = 2.0 X 1011 Pa) that suspends the elevator car in its shaft is 2500 N. How many mm will the elevator cable stretch?
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Figure 1 myy Question 2: (10) to (a) A uniform picture of mass kg hangs vertically as shown in Fig.2. Each of the two wires supporting it is 0.5 m long, and they are attached at points on the picture 0.8 m apart. The cross- sectional area of each wire is 1 mm². Calculate the stretch in each wire. Young's modulus for the wire 9x1010 N/m². Hint T₁ T₂ 0.5 m 73, 174 0.5 m -0.8 m Figure 2 (b) A hollow steel column 3 m high shortens by 0.3 mm under a compressive load of 3x105 N. If the inner diameter of the cylinder is 0.8 times that of the outer one, calculate the outer diameter. 1 ماه