A steel wire hangs from a high-altitude balloon. The steel has unit weight 77 kN/m3 and yield stress of 280 MPa. The required factor of safety against yield is 2.0. The maximum permissible length of the wire is approximately:
(A) 1800 m
(B) 2200 m
(C) 2600 m
(D) 3000 m
(A) 1800 m
Physics & Space Science
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