Question

When the tension on a wire is 6N its length is l1. when the tension on the wire is 7N its length is l2. Find its natural length

Answer 1

Answer:

Explanation: let natural length be l also young modulus of the material be Y.

As the wire is same the area be A.

We know Y= FL/A∆l.

Putting values for both l1 and l2 we get

l = 6×l2-7×l1.

Hope it helps you!