A wire is made from a material of density ρ.
The wire has a mass m and an initial length L.
When the tensile force in the wire is F the extension of the wire is ΔL.
What is the Young modulus of the material?
$\frac{{Fρ{L^2}}}{{mΔL}}$
2 )
$\frac{{F{L^2}}}{{mρΔL}}$
3 )
$\frac{{Fρ}}{{mΔL}}$
4 )
$\frac{{Fm{L^2}}}{{ρΔL}}$
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!