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Question

A steel cable with a radius of 2 cm supports a chairlift. If the maximum stress is not to exceed 8×107N/m2, what is the maximum load the cable can support?

A
105N
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B
107N
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C
106N
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D
109N
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Solution

The correct option is A 105N
Fmax=δmaxA
=8×107×π×(2×102)2
=8×107×π×4×104=107×104×100
=105N

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