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A steel wire with cross-section 3 cm^2 h...

A steel wire with cross-section 3 `cm^2` has elastic limit 2.4 `xx` `10^8` N`m^-2`. The maximum upward accele­ration that can be given to a 1200 kg elevator supported by this cable if the stress is not to exceed one-third of the elastic limit (take g =10m/ `s^2`) is

A

12 `ms^-2`

B

10 `ms^-2`

C

8 `ms^-2`

D

7 `ms^-2`

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SL ARORA-Mechanical Properties of Solids-Example
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