The total strain energy of a beam of length L, having moment of inertia of its section I, when subjected to a bending moment M is
1
\({{\rm{}}_{\rm{}}} \mathop \smallint \nolimits_0^{\rm{L}} \frac{{{{\rm{2M}}^2}}}{{{\rm{EI}}}}{\rm{dx}}\)
2
\({{\rm{}}_{\rm{}}} \mathop \smallint \nolimits_0^{\rm{L}} \frac{{{{\rm{M}}^2}}}{{{\rm{EI}}}}{\rm{dx}}\)
3
\({{\rm{}}_{\rm{}}} \mathop \smallint \nolimits_0^{\rm{L}} \frac{{{{\rm{M}}^2}}}{{2{\rm{EI}}}}{\rm{dx}}\)
4
None of these