Tensile Stress and Strain: a 1000-Kg Object Hangs from the Lower

question 14

Multiple Choice

Tensile stress and strain: A 1000-kg object hangs from the lower end of a steel rod 5.0 m long that is suspended vertically. The diameter of the rod is 0.80 cm and Young's modulus for the rod is 210,000 MN/m². What is the elongation of the rod due to this object?

• A) 1.2 cm
• B) 0.46 cm
• C) 0.12 cm
• D) 1.8 cm
• E) 0.047 cm

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