The beam fully supported at one side is loaded by Force F (see below). The displacement at the free end of the beam is to be calculated by utilizing the principle of virtual force. a. Calculate the bending moment due to a virtual force F at the free end of the beam. b. Calculate the bending moment due to load F. c. Calculate the displacement f at the free end by the principle of virtual force. Given: I, a, F, Bending Stiffness El a F X