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A steel cable with a radius `2cm` supports a chairlift at a ski area. If the maximum stress is not to exceed `10^8Nm^-2`, the maximum load the cable c

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A steel cable with a radius `2cm` supports a chairlift at a ski area. If the maximum stress is not to exceed `10^8Nm^-2`, the maximum load the cable can support is
A. `4pixx10^5N`
B. `4pixx10^4N`
C. `2pixx10^5N`
D. `2pixx10^5N`
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Correct Answer - C
Here, `r=2cm=2xx10^-2m`
Maximum load `=` maximum stress`xx`Area of cross section.
`=10^8Nm^-2xxpixx(2xx10^-2m)^`
`=4pixx10^4N`
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