1. Rope AB and AC are both made from DupontTM Kevlar 29 brand fibers. The cross-sectional areas and lengths of wires AB and AC are 0.4 in² and 20 ft, and 0.5 in² and 13 ft, respectively. If the weight attached to both ropes is 2000 tons, and if the allowable deformation in the ropes is 1 mm, will the system fail? 30° W 50°
1. Rope AB and AC are both made from DupontTM Kevlar 29 brand fibers. The cross-sectional areas and lengths of wires AB and AC are 0.4 in² and 20 ft, and 0.5 in² and 13 ft, respectively. If the weight attached to both ropes is 2000 tons, and if the allowable deformation in the ropes is 1 mm, will the system fail? 30° W 50°
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Transcribed Image Text:Physical Properties
Density
Moisture Absorption at Equilibrium
Mechanical Properties
Tensile Strength, Ultimate
Elongation at Break
Tensile Modulus
Tenacity
Thermal Properties
Specific Heat Capacity
Thermal Conductivity
Maximum Service Temperature, Air
Shrinkage
Metric
1.44 g/cc
4.5%
7.0%
Metric
2920 MPa
3620 MPa
3.6%
70.3 GPa
2.03 N/tex
Metric
1.42 J/g-°C
@Temperature 25.0 °C
0.0400 W/m-K
149-177 °C
<= 0.10%
English
0.0520 lb/in
4.5%
7.0%
English
424000 psi
525000 psi
3.6%
10200 ksi
23.0 g/denier
English
0.339 BTU/lb-°F
@Temperature 77.0 °F
0.278 BTU-in/hr-ft¹-°F
300-351 °F
<= 0.10%
Comments
Bone drying the fiber then condition at 75°F (24°C), 55 % RH.
yarn as shipped
Comments
Breaking Tenacity
Epoxy-impregnated strands, ASTM D2343
Comments
For long-term use
In water at 212°F (100°C) and in air at 351°F (177°C)
Transcribed Image Text:1. Rope AB and AC are both made from Dupont™ Kevlar 29 brand fibers. The cross-sectional areas
and lengths of wires AB and AC are 0.4 in² and 20 ft, and 0.5 in² and 13 ft, respectively. If the
weight attached to both ropes is 2000 tons, and if the allowable deformation in the ropes is 1
mm, will the system fail?
30°
W
50°
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