Question

in equilibrium the tensile stress to which a wire of radius r is subjected by attaching a mass m is​

Answer 1

Answer:

I HOPE IT WILL HELP YOU.

Explanation:

Correct option is

C

U=  

2L

AY

​  

I  

2

 

Work done =  

2

1

​  

×stress×strain×volume

                   =  

2

1

​  

×Y×(strain)  

2

×volume

                   =  

2

1

​  

×Y×(  

L

I

​  

)  

2

×AL

                   =  

2

1

​  

×Y×  

L  

2

 

I  

2

 

​  

×AL

                   =  

2L

YI  

2

A

​  

 

                   =  

2L

YI  

2

A

​  

 

Hence, the answer is  

2L

YI  

2

A

​  

.