What is the maximum length of a metal cable that can hang vertically supported from one end of the cable?
The Young's modulus of this metal is 2.10 × 1011 N/m2, its tensile strength (the maximum tensile stress it can support without breaking) is 7.40 × 108 N/m2, and its density is 7.60 × 103 kg/m3.
A) 9.94 km
B) 4.22 km
C) 456 km
D) 1.75 km
E) 24.8 km
Answer: A
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