A 10mm diameter annealed steel wire is drawn through a die at a speed of 0.5 m/s to reduce the diameter by 20%. The yield stress of the material is 800 MPa
Neglecting friction and strain hardening, the stress required for drawing (in MPa) is
A
178.6
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B
357.0
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C
1287.5
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D
2575.0
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Solution
The correct option is B 357.0 Diameter of steel wire