# AM1.4 - AM1.4Bending moment in a simply supported beam...

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AM1.4—Bending moment in a simply supported beam Introduction: Bending moment is the internal moment vector, to be more specific, in a system the sum of the internal force vectors is same as the applied external force and the total moment vectors produced by the internal force is equal to the moment of the external force. As a result, the sum of

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forces (internal and external) and the moment (external and internal) of this system is zero. This experiment aims at find the relation between bending moment and distance as well as force. In this experiment, distance and force could change as need to prove the formula or using formula to calculate what we need. Objective: This experiment would help student to understand the meaning of bending moment easily like change the distance student would find the relation between bending moment and force. Meanwhile, to deal with various datum can make it more unforgettable. Observations and Results: Figure 1: Bending moment of a beam experiment in the structures frame Figure 1 is the exactly what students used during experiment and students could change distance by hang the hanger in the beam and change force by using masses (10g per mass). Finally, the data of force would shows in
screen. Figure 2: Force Diagram In figure 2, l=0.44m, a=0.3m and W is the position of hanger and mass 10g per mass Bending moment at the cut (in Nm) = Displayed force (in N) * 0.125(eq. 1) which is experimental data.

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