... done by kip force is Ue = (2) (¢ A)h = (¢ A)h Conservation of Energy: Ue = Ui (¢ A)h = 0. 0142 07 = 0. 0142 in Ans 1180 14 Solutions 46060 _Part1 6/11/10 8:18 AM Page 1181 © 2010 Pearson Education,... shown The beam is made of material having a modulus of elasticity of E and Poisson’s ratio of n P L a a b h Section a – a Internal Moment Referring to the free-body diagram of the left beam’s cut... strain energy is only 0.09% of the bending strain energy Therefore, the effect of the shearing strain energy is usually neglected if L 10h 1169 14 Solutions 46060 _Part1 6/11/10 8:18 AM Page 1170