1.

An elevator cable is to have a maximum stress of \[7\times {{10}^{7}}N/{{m}^{2}}\] to allow for appropriate safety factors. Its maximum upward acceleration is\[1.5m/{{s}^{2}}\]. If the cable has to support the total weight of 2000 kg of a loaded elevator, the area of cross-section of the cable should be     

A. \[3.28c{{m}^{2}}\]
B. \[2.28c{{m}^{2}}\]
C. \[0.328c{{m}^{2}}\]
D. \[0.823c{{m}^{2}}\]
Answer» B. \[2.28c{{m}^{2}}\]


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