Question

a wire of length l, area of cross section A and weight w is subjected to external force 2w . if Y is young modolus ,then total extension in wire is​

Answer 1

Answer:

2WL/AY.

Explanation:

Since, we know that the young's modulus Y is having the formulae of the force per unit area / the original length to the change in length. The total extension will be given as ΔL.

Since, the original length is l, force is 2W and the cross-sectional area is also given in the question as A. So, the Young's modulus will be Y=2WL/AΔL. So, the change in length or the total extension will be 2WL/AY.