Question

2
6. When a tension 'F' is applied, the elongation
produced in uniform wire of length 1, radius rise,
when tension 2F is applied, the elongation
produced in another uniform wire of length
21 and radius 2r made of same material is​

Answer 1

Answer:

Lets consider x be the elongation produce in wire when 2F is applied of radius 2r and length 2l.

The material of wire is same, so young's modulus is equal.

Y=Y

′

e/l

F/A

=

x/2l

2F/A

′

Ae

1

=

A

′

x

4

πr

2

.e

1

=

4πr

2

.x

4

e

1

=

x

1

x=1.0e