n 1800-kg car, being lifted at a steady speed by a crane, hangs at the end of a cable whose radius is 6.0 x 10 -3 m. The cable is 15 m in length and stretches by 8.0 x 10 -3 m because of the weight of the car. Determine a) the stress, b) the strain, and c) the Young’s modulus for the cable

Physics for Scientists and Engineers: Foundations and Connections
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ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter14: Static Equilibrium, Elasticity, And Fracture
Section: Chapter Questions
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An 1800-kg car, being lifted at a steady speed by a crane, hangs at the end of a cable whose
radius is 6.0 x 10 -3 m. The cable is 15 m in length and stretches by 8.0 x 10 -3 m because of the
weight of the car. Determine a) the stress, b) the strain, and c) the Young’s modulus for the
cable.

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on the stress formula, why is delta length used for the area instead of the radius?

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