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The elastic limit of brass is 379MPa. Wh...

The elastic limit of brass is `379MPa`. What should be the minimum diameter of a brass rod if it is to support a 400 N load without exceeding its elastic limit?

A

1.00 mm

B

0.90 mm

C

1.36 mm

D

1.16 mm

Text Solution

Verified by Experts

The correct Answer is:
D
Breaking stress `=(F)/(A)=(Fxx4)/(pid^(2))rArr(400xx4)/(pixxd^(2))=379xx10^(6)rArrd=1.16xx10^(-3)=1.16mm`
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