What will be the minimum diameter of a steel wire, which is used to raise a load

Question

What will be the minimum diameter of a steel wire, which is used to raise a load of 4000N if the stress in the rod is not to exceed 95 MN/m²?

Options:

A . 6mm

B . 6.4mm

C . 7mm

D . 7.3mm

Answer: Option D
Answer: (d).7.3mm

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