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Find out diameter of steel wire:
Q: A load of 5 KN is to be raised with help of steel wire. Find out diameter of steel wire, if maximum stress does not to exceed 100 MNm2.
Sol.: Given:
P = 5 KN = 5000N
σ = 100MN/m2 = 100N/mm2
Let D be diameter of wire
We know, σ = P/A
σ = P/ (Π /4 × D2)
100 = 5000/ ( Π /4 × D2)
D = 7.28mm .......ANS
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