Experiment: A and B are the two supports on a 10-meter-long beam. The beam is fastened at Support A and supported by a roller at Support B, and it is centred by a 10kN elephant. A free-body diagram (FBD), as well as a shear and bending moment diagram, should be created for this system. You may discuss about the results and explain the stress in the beam.
In words, explain the principle of statics and aim of this experiment.