P= 4 kN w= 0.8 kN/m a) Start with the shear diagram. To use a segment of the left end of the beam to develop the expression for the shear, the vertical reaction at A must be known. Calculate the vertical reaction at A. Let a positive force act up. b)Write an expression for the internal shear for an arbitrary point between A and B c)Write an expression for the internal shear for an arbitrary point between B and C.

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A: The shear force diagram of the loading on the beam is shown below.

Bending Moment

In general, we can define the bending moment as the reaction induced when a certain amount of load or force is applied to an element which makes it bend.