Question

A steel wire 20mm in diameter is stretched by a force of 113N.the tensile stress applied is:

Answer 1

Answer:

Explanation:

Correct option is

A

1.273×10  

7

N/m  

2

 

given diameter = 1mm  

⇒ radius of wire  

​  

 

=0.5×10  

−3

 m

=5×10  

−4

 m

​  

 

​  

 

Force applied =10 N

∴ Stress =  

π×25×10  

−8

 

10

​  

 

=0.1273×10  

8

 

Stress =1.273×10  

7

 N/m  

2

 

​