Final answer:
The strain when a circular bar stretches from 1in to 1.4in is 0.4.
Step-by-step explanation:
To find the strain when a circular bar stretches from 1in to 1.4in, we can use the formula for strain:
Strain = (change in length) / (original length)
In this case, the change in length is 1.4in - 1in = 0.4in, and the original length is 1in.
Plugging these values into the formula:
Strain = 0.4in / 1in= 0.4
Therefore, the strain is 0.4.