Question

Answer option (3) Explanation required. Spammers will be reported .

Answer 1

Answer:

Stress = Mgl/2Ax

Strain = x^2 / 2 L ^2

Stress / Strain = Y

Mgl^3/Ax^3 = Y

x = ( Mgl ^3 / YA ) ^ 1/3

I hope it helps .