MCQOPTIONS
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| 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. \[2.28c{{m}^{2}}\] | |