Question

When a bar is stretched to its double-length, the longitudinal strain produced in it is

0.5

2

1

1.5​

Answer 1

strain will become half

Answer 2

Given:

When a bar is stretched to its double-length.

To Find:

The longitudinal strain produced in it is

a. 0.5

b. 2

c. 1

d. 1.5​

Solution:

The longitudinal strain is the ratio of change in length to the original length. The wire is stretched to double its original length.

Hence change in length = $(2*L - L)$ = L (where L is original length. ) Therefore change in length is ΔL = L.

Hence strain =$\frac{L}{L}$ = 1

The longitudinal strain produced in it is 1.