Ncert Exercises & Solutions

A spring is stretched by applying a load to its free end. The strain produced in the spring is:

(3) Hint: Observe the change in the dimensions of the spring.

Step 1: Find the change in the length and shape of the spring.

Consider the diagram where spring is stretched by applying a load to its free end. Clearly the length and shape of the spring changes.

The change in length corresponds to longitudinal strain and the change in shape corresponds to shearing strain.