A $$900$$ kg elevator hangs by a steel cable for which the allowable stress is $$1.15$$×$$108N/m2$$ . What is the minimum diameter required if the elevator accelerates upward at $$1.5m/s2$$ . Take $$g=$$ $$10$$ m $$/$$ $$s2$$

Correct option is 26×10−210πm

Questions

A 900 kg elevator hangs by a steel cable for which the allowable stress is $1 .15 \times 10^{8} N / m^{2}$ . What is the minimum diameter required if the elevator accelerates upward at $1 .5 m / s^{2}$ . Take g= 10 $m / s^{2}$

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detailed solution

Correct option is B

1.15×108=900(10+a)πd24⇒d=610πcm

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A 900 kg elevator hangs by a steel cable for which the allowable stress is 1.15×108N/m2 . What is the minimum diameter required if the elevator accelerates upward at 1.5m/s2 . Take g= 10 m / s2

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A 900 kg elevator hangs by a steel cable for which the allowable stress is $1 .15 \times 10^{8} N / m^{2}$ . What is the minimum diameter required if the elevator accelerates upward at $1 .5 m / s^{2}$ . Take g= 10 $m / s^{2}$