For young's modules elasticity, what is E (elasticity) measured in?

Question

meters or joules or what? i have no idea

Answer 1

I appreciate that you may be unsure of the spelling,  but most search engines are pretty good at suggesting spelling options. If one puts [ young's modules ] in the search box at the top of this page, the very first link ( http://en.wikipedia.org/wiki/Young%27s_m... ) says:

"Young's modulus is the ratio of stress, which has units of pressure, to strain, which is dimensionless; therefore Young's modulus itself has units of pressure.

The SI unit of modulus of elasticity (E, or less commonly Y) is the pascal; the practical units are megapascals (MPa) or gigapascals (GPa or kN/mm²). In United States customary units, it is expressed as pounds (force) per square inch (psi)."

Answer 2

E=stress/strain ,within the elastic range . stress=force/area, strain is deformation in terms of lengh. because strain has no measure (increased lengh/original lengh, then without dimension) then the masure of elasticity is N/square meter, etc) .thank you . you made me to study.