Question

What do you mean by the Young’s modulus for steel is 𝒀 = 𝟐. 𝟎 × 𝟏𝟎𝟏𝟏 𝑵𝒎−𝟐 ? Explain briefly.

Answer 1

It serves as a 'stiffness coefficient' of materials. This value means that a stress of 2·10¹¹ N/m² will develop in a specimen stretched twice of its original length.