Question

Define modulus of elasticity.Explain young's modulus by writing its formula.

Answer 1

hope u like it and it helps u

Answer 2

Young's modulus(y) : longitudinal stress
----------------------------
longitudinal strain
mg/(pi)r^2
=--------------
Delta L/L
=mgL/(pi)r^2delta L.
It's si unit is N/m^2 or Pascal.

Now actually Young's modulus describes the tensile elasticity.therefore it's also referred to as the ratio of tensile stress to tensile strain .This is called the modulus of elastcity.Hope u got that.